Preen® Extended Control™ Weed Preventer

Preen Extended Control Weed Preventer is rated 4.6 out of 5 by 170.
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For 50 years, gardeners have trusted Preen® Weed Preventer products to help keep their garden and landscape beds weed-free for months. Preen® Extended Control Weed Preventer is the longest lasting Preen® yet, stopping weeds for up to six months per application. It’s labelled for use around 600 plants in perennial flower beds; around groundcovers, trees and shrubs; and in xeriscape settings and rock gardens. Preen® Extended Control Weed Preventer tackles many of the toughest weeds a gardener faces, including: dandelions, crabgrass, field bindweed, white clover, chickweed, henbit, purslane, Carolina geranium, stinging nettle, horseweed or marestail, oxalis, spurge, lambsquarters and more.

Preen’s jug-handled bottle with a flip-top applicator cap makes Preen® Extended Control ™ Weed Preventer easy to apply. Simply flip open the top, tilt the bottle and start shaking it to evenly distribute the product granules on top of soil or mulch. Water in the treated area to activate the protective weed barrier. That’s all it takes to stop listed grassy and broadleaf weeds for up to six months.

Best of all, by applying Preen® Extended Control Weed Preventer just 2 times per year you can get year-round protection from new weeds. No weeds means no time wasted weeding!

Quick Links

Application

Application

How to Apply

Preen® Extended Control™ Weed Preventer is not a weed killer – it stops new weeds from sprouting. First remove any existing weeds that may be growing. Then apply Preen® Extended Control Weed Preventer using the easy-to-use bottle with flip-top applicator-cap. Sprinkle the product granules on top of the soil or mulch at the rate recommended on the label. Once the product is activated by watering, it forms an invisible weed control barrier in the top layer of soil (1 – 3 inches), preventing new weeds from growing. If it’s not possible to water in the product right away, and no rain falls within two days, use a rake to work the product into the soil or mulch.

When to Apply

Preen® Extended Control Weed Preventer can be applied up to two times per year around established plants and transplants. A first application can be made any time throughout the growing season -- spring, summer or fall. For ongoing weed-protection, a second seasonal application can be made two to six months after the first application.

When planting or transplanting into an area treated within the past 12 months, use fresh soil as fill in planting holes. Disturbing the soil surface after activation may result in erratic weed control.

Applying Around Established and Transplanted Plants

When used as directed, the product can be used around more than 600 listed perennials, groundcovers, shrubs and trees. For the full list, see product label. To apply around established perennials, ground covers, shrubs and trees: sprinkle Preen® Extended Control Weed Preventer evenly over the entire soil surface, at the rate of .98 oz per 10 sq ft. Keep the granules away from plant roots and foliage. Always brush off or wash off stray weed preventer granules from plant foliage to avoid leaf damage or discoloration. If it is not convenient to water-in quickly and rain is not expected within two days, lightly rake the granules into the top layer of soil or mulch.

Applying with Mulch

For best weed control, we recommend applying Preen® Extended Control Weed Preventer after spreading mulch on your perennial flower, shrub and landscape beds. Sprinkle Preen®on top of the mulch at the same rate as recommended for application directly to soil.

Not for Use With:

This product should not be used on flower seeds, lawns, vegetable gardens or water gardens. It also is not for use around food-producing or edible plants, including herbs and fruit-bearing nut or fruit trees, or around a short list of plants which are sensitive to Preen® Extended Control Weed Preventer (see list on label).

NOTE:

This is not the product label. Always read and follow directions on the product label. Use only as directed. Not available in New York.

FAQ

Coupons

Do you offer coupons, rebates, etc?

Very often our retailers or mass merchants offer their own special sale price, coupons or rebates. Local flyer, newspaper inserts, and media advertising can alert you to these offers.

General Product Questions

What is the active ingredient in Preen® Extended Control™ Weed Preventer?

There are two:

1.500% Trifluralin

0.375% Isoxaben

What are the other ingredients in Preen® Extended Control Weed Preventer?

In addition to the active ingredient, Preen® Extended Control Weed Preventer contains a biodegradable carrier agent made of corn cob and/or biodac (recycled newsprint).

What weed seeds does Preen® Extended Control Weed Preventer prevent from germinating?

See the product label for a list of grassy and broadleaf weeds controlled.

How long does Preen® Extended Control Weed Preventer prevent weed seeds from germinating?

Up to 6 months per application. Heavy rain or excessive heat and humidity weather conditions may shorten the effective period.

How long does Preen® Extended Control Weed Preventer stay in the soil?

Approximately 6 months per application. The rate at which Preen® Extended Control Weed Preventer biodegrades will depend on temperature, soil type, rain/moisture, sunlight and amount applied.

What weeds does Preen® Extended Control Weed Preventer kill?

None. Preen ® Extended Control Weed Preventer helps to prevent germination of seeds from the list of weeds shown on the label for up to 6 months per application. It does not kill or inhibit existing weeds in any way.

How much water must I apply to activate Preen® Extended Control Weed Preventer?

After application, you only need to apply enough water to thoroughly wet the surface of the soil. The granules will not dissolve when watered in. They will disintegrate over a period of weeks.

What are the particles on the soil surface after I watered Preen® Extended Control Weed Preventer?

Once Preen® Extended Control Weed Preventer is watered in, the carrier, such as corn cob or biodac will remain on the surface and biodegrade within a month or so.

How does Preen® Extended Control Weed Preventer work?

Preen® Extended Control Weed Preventer works to create an invisible barrier that inhibits weed seed growth. The barrier can last up to 6 months.

Will rain wash Preen® Extended Control Weed Preventer away?

  No, the active ingredient bonds to soil particles in the top layer of soil. But excessively warm wet conditions may shorten its effective period.

Why is the Preen® Extended Control Weed Preventer container not completely full?

Our product container is packaged/sold by weight, not by volume. If you weigh the container you will find that the weight is as stated or slightly higher.

Do you have a guarantee on your products?

Preen® Guarantee: To the extent consistent with applicable law, Lebanon Seaboard Corporation guarantees you will be satisfied with the performance of Preen® products when used as directed, or your money back. If not satisfied, describe the nature of your problem, and send with proof of purchase to:

Lebanon Seaboard Corporation
1600 East Cumberland St.
Lebanon, PA 17042

Proper Use

How close can I apply Preen® Extended Control Weed Preventer to a non-recommended plant?

Apply at least 12″ outside the drip-line of a non-recommended plant.

What does “established plant” mean on the Preen® Extended Control Weed Preventer label?

This term refers to perennials, trees and shrubs that are at least 3-inches in height, have not recently transplanted and have a strong root system. For recently transplanted plants: do not apply Preen® Extended Control Weed Preventer until plants have been watered once or twice to make sure the soil is well and uniformly settled by packing or irrigation around the plants. An established ground cover is one that is not recently planted, is well-rooted and has spread and filled in to your satisfaction. Note: Groundcovers will not spread where Preen® Extended Control Weed Preventer is active (about 4–6 months).

What does “non-bearing" fruit and nut trees mean?

This term refers to established fruit and nut trees that have not matured to the point of producing a harvest. Preen® Extended Control Weed Preventer can be applied around the label listed non-bearing fruit and nut trees until they begin bearing fruit or nuts; otherwise, it cannot be applied.

When do I apply Preen® Extended Control Weed Preventer?

A first application can be made at any time throughout the growing season -- spring, summer or fall. To establish a 12-month weed-protection cycle, reapply the product in six months.

Is there a benefit to applying Preen® Extended Control Weed Preventer in the fall?

September and October are perfect months for a fall application as many winter annual weeds actively germinate and grow slowly in fall and even over winter. When applied in fall, the product helps reduce these weeds in early spring and thus makes spring garden preparation easier.

Do I have to weed first before applying Preen® Extended Control Weed Preventer?

Yes. Preen® Extended Control Weed Preventer does not kill existing weeds. First get rid of existing weeds, roots and all, then apply Preen® Extended Control Weed Preventer. If there is no opportunity to remove weeds first, an initial application can be utilized to prevent further weeds until you have an opportunity to clear the garden and landscape beds.

When do I reapply Preen® Extended Control Weed Preventer?

To establish a 12-month weed-protection cycle, reapply the product six months after the prior application. Should excessively warm wet conditions shorten the effective period, it is okay to reapply 60 days or more after the prior application. Do not apply more than three times per year.

Can Preen® Extended Control Weed Preventer be applied when plant foliage is wet?

Yes, but only if you immediately wash off any stray granules that stick to wet leaves as wet granules can damage or discolor plant foliage. Much easier is to apply the product when leaves are dry, as then granules that land on foliage can be readily brushed off by hand.

Does Preen® Extended Control Weed Preventer need to be watered-in?

Yes; rain or water must immediately follow application to activate the product.

What happens if rain or water does not immediately occur after application?

Preen® Extended Control Weed Preventer will not start to work until activated by rain or watering. If watering is not an option, time your application to coincide with expected rain, or lightly rake the granules into the soil to protect the active ingredient from UV degradation by sunlight until rain occurs.

How much Preen® Extended Control Weed Preventer should I apply?

For label recommended flowers, trees, shrubs, and groundcovers, sprinkle granules lightly and evenly over the soil. Apply approximately .98 oz per each 10 square feet, or 6.125 lb per 1,000 square feet.

Can Preen® Extended Control Weed Preventer be applied on plant foliage or exposed plant roots?

No; plant injury could result.

What do I do if Preen® Extended Control Weed Preventer accidentally got on plant foliage during application?

You should immediately brush off any granules that fall on dry plant foliage. If any granules fall on wet foliage, you should thoroughly and immediately rinse them off with a garden hose.

How do you use Preen® Extended Control Weed Preventer with flowers, trees, and shrubs?

Remove existing weeds and weed roots. Then apply Preen® Extended Control Weed Preventer to soil or mulch around established plants and transplants. Then water in thoroughly.

How do you use Preen® Extended Control Weed Preventer with groundcovers?

Check that your groundcovers are listed on the product label. If they are fully established and have spread as you desire, then apply Preen® Extended Control Weed Preventer around the dry foliage and water in immediately.

Why can't I apply Preen® Extended Control Weed Preventer to muck (constantly wet) soil or soils containing more than 10% organic matter?

These types of soils will neutralize the active ingredients in Preen® Extended Control Weed Preventer.

When do I apply Preen® Extended Control Weed Preventer with bulbs?

Preen® Extended Control Weed Preventer may be applied for the control of annual weeds in ornamental bulbs, e.g., bulbous iris, daffodil (narcissus), hyacinth and tulip. Apply this product on top of the soil 2 to 4 weeks after planting but prior to the emergence of annual weeds. This product may also be applied following bulb emergence but prior to flowering and after flowering. For fall planted bulbs, apply the product in late winter or early spring to soil surface.

Do not apply to tulip plants that have emerged to a height greater than 3/4 inch. Do not apply to gladiolus prior to emergence or if corms are less than one inch in diameter. Do not apply to bulbs while they are flowering.

Does Preen® Extended Control Weed Preventer control weeds that have been tilled under?

No; already growing weeds that are not completely removed will emerge again. Start with a clean slate: remove existing weeds, roots and all. Then apply Preen® Extended Control Weed Preventer.

Do I apply Preen® Extended Control Weed Preventer by hand?

No; apply Preen® Extended Control Weed Preventer using the easy-to-use bottle with flip-top applicator-cap. Sprinkle the product granules on top of the soil or mulch at the rate recommended on the label, then water in to activate.

Can I mix Preen® Extended Control Weed Preventer with water before application?

No; mixing with water dilutes the active ingredients and renders the product ineffective.

How long after an application of Preen® Extended Control Weed Preventer should I wait before planting non label-recommended plants?

You should wait 12 months.

Staining

Can Preen® Extended Control Weed Preventer stain?

Yes; Preen® Extended Control Weed Preventer can stain porous surfaces such as concrete, rocks, bricks, landscape blocks, shoes, leather, linoleum, vinyl, shoes, and carpet.

How do I prevent possible staining?

Never apply Preen® Extended Control Weed Preventer when any surrounding porous surface is wet. Sweep off or dry brush off stray granules from any non-target surface before watering the area to activate the product. To avoid surface staining in storage, place the bottle on top of a piece of cardboard or thick newspaper, not directly on shelving or flooring such as linoleum, vinyl, tile, cement or carpet.

How can I get rid of a Preen® Extended Control Weed Preventer stain?

Try Goo Gone or another citrus-based cleaning product to lessen the appearance of or remove a stain. Always test a small area first to ensure the product won't cause additional staining.

For porous surfaces: Use equal parts soapy water and bleach, or a paste of baking soda and water, or ultraviolet light/sunlight, or a citrus-based cleaner, or 409 carpet foaming spray cleaner. Always follow manufacturer's directions.

For non-porous, uncoated surfaces: Use acetone or an acetone based nail polish remover.

Human & Pet Safety

Where can I find emergency medical information for Preen® Extended Control Weed Preventer?

Immediately call ProPharma toll-free at (888) 208-1368 and/or 911.

When can people and pets enter an area that was treated with Preen® Extended Control Weed Preventer?

They may enter the treated area after it is thoroughly dry from the first rain or watering.

Can I walk on a Preen® Extended Control Weed Preventer treated area?

Limit walking on a treated area, as soil disturbance will result in erratic weed prevention.

Product Misapplication

What can I do if I applied Preen® Extended Control Weed Preventer to my lawn, flower, or grass seeds, a non-recommended plant, etc.?

The active ingredient should be neutralized using activated charcoal granules (also called activated carbon). Activated Charcoal can be found at garden centers, pool supply stores, pet stores, or in the aquarium supply section of stores. Call the store first to confirm availability. Charcoal bricks used in a grill will not work.

  1. Sprinkle activated charcoal granules onto the soil surface at a rate of one pound per 100 square feet.
  2. Gently rake the activated charcoal into surface of soil.
  3. Thoroughly water the activated charcoal treated area.
  4. Repeat the watering schedule for three days.
  5. Cease watering. After two days, the active ingredient in the product will be neutralized
Preen® Extended Control Weed Preventer was over-applied in my garden. How can I save my plants from injury?

If rain or watering did not occur: Physically remove Preen® Extended Control Weed Preventer granules.

If rain or watering did occur, or if you were unable to physically remove the granules, neutralize the product following these steps:

The active ingredient should be neutralized using activated charcoal granules (also called activated carbon). Activated Charcoal can be found at garden centers, pool supply stores, pet stores, or in the aquarium supply section of stores. Call the store first to confirm availability. Charcoal bricks used in a grill will not work.

  1. Sprinkle activated charcoal granules onto the soil surface at a rate of one pound per 100 square feet.
  2. Gently rake the activated charcoal into surface of soil.
  3. Thoroughly water the activated charcoal treated area.
  4. Repeat the watering schedule for three days.
  5. Cease watering. After two days, the active ingredient in the product will be neutralized.

Use Around Seeds and Young Plants

Will flower seeds germinate with Preen® Extended Control Weed Preventer?

Wait 6 months before planting seeds in an area treated with Preen® Extended Control Weed Preventer. Flower seeds will not germinate for up to 6 months per application.

How long after an application of Preen® Extended Control Weed Preventer should I wait before planting label-listed annual flower transplants?

If you will plant straight into the treated soil, you should wait 12 months from your last application. But, there’s no need to wait if you keep treated soil out of the planting hole and, after positioning the plant, backfill the hole with fresh untreated soil or a planting mix. Preen®granules should not come in contact with plant roots at any time. If possible, it is recommended to plant first, then apply Preen® Extended Control Weed Preventer.

I have planted my annual flower transplants. How long do I need to wait to apply Preen® Extended Control Weed Preventer?

Preen® Extended Control Weed Preventer may be applied around any label listed transplant after the plants have been watered once or twice to make sure the soil is uniformly settled around the plants. Avoid getting granules on plant leaves. Water area immediately after application.

How do I apply Preen® Extended Control Weed Preventer with vegetables?

  Preen® Extended Control Weed Preventer is NOT approved for use in vegetable gardens.

Use with Mulch

Should Preen® Extended Control Weed Preventer be applied before the mulch is applied (directly on the soil) or on top of mulch?

Though the product works either way, we feel it is preferable to apply Preen® Extended Control Weed Preventer on top of mulch. The product stops weed seeds from rooting for six months whether they’re already present in the top layer of garden soil or mulch or are carried in by the wind, birds or animals during that time

Where to Apply Preen

Can I use Preen® Extended Control Weed Preventer on my lawn or with grass seed or sod?

No; turf injury could result. Preen® Extended Control Weed Preventer is not labeled for use on lawns.

Can I use Preen® Extended Control Weed Preventer in or near a pond, lake, or other type of waterway?

No; Preen® Extended Control Weed Preventer is harmful to aquatic life. Do not use if there might be any chance of runoff into the water.

Can I use Preen® Extended Control Weed Preventer around, under, or near a swimming pool, sandbox, playground type area, or under bird feeders?

No.

Can I use Preen® Extended Control Weed Preventer in or near a greenhouse or any type of enclosed area?

No; staining and/or volitization could occur causing plant injury.

Can Preen® Extended Control Weed Preventer be used in potted plants or planter boxes?

No; plant injury could result.

Can I use Preen® Extended Control Weed Preventer where chickens, horses or other animals graze?

No.

Can I use Preen® Extended Control Weed Preventer on a garden slope or hillside?

Yes, if a waterway is not at the bottom of the slope or hillside.

Can I use Preen® Extended Control Weed Preventer on decorative stones or pebbles?

Preen® Extended Control Weed Preventer can stain porous materials such as stone or brick. Before treating your entire area, do an application to a small area to test for staining, which would appear within a few days. Always apply when stones are dry and water thoroughly immediately after application.

What plants are recommended with Preen® Extended Control Weed Preventer?

See the long list of compatible plants on the product label. Also note on the label the list of plants around which Preen® Extended Control Weed Preventer should NOT be applied.

Can I use Preen® Extended Control Weed Preventer with a plant that is not listed on the product label?

If you wish to use Preen® Extended Control Weed Preventer on plant species not listed on this label, you should determine the suitability for use by treating a small number of such plants. Prior to treatment of larger areas, the treated plants should be observed for any sign of herbicidal injury for 30 to 60 days of normal growing conditions. The user assumes responsibility for any plant damage or other liability resulting from use of Preen® Extended Control Weed Preventer on plant species not listed in this label. Do not apply to any plant-intended for food or feed.

Storage and Disposal

Does Preen® Extended Control Weed Preventer expire?

No. Preen® Extended Control Weed Preventer has an indefinite shelf-life as long as it is sheltered from moisture and sunlight.

Can Preen® Extended Control Weed Preventer be stored for next year?

Yes; store in a dry place away from sunlight and moisture. Place the bottle on a piece of cardboard or newspaper, not directly on a linoleum, cement, vinyl, tile, or a carpeted surface, as staining may occur.

How do I dispose of Preen® Extended Control Weed Preventer or its empty container?

Disposal requirements differ from place to place. Call your local municipality to inquire on proper product disposal and/or package recycling, or call 1-800-CLEANUP. If not recyclable in your area and container is empty, place empty container in trash.

Weeds Controlled

Available Sizes

Reviews

To review a particular product within this family please choose from one of the available sizes below, or you may continue to write a review for Preen Extended Control Weed Preventer without selecting a size.

Rated 5 out of 5 by from So far so good! We put the Preen Extended Control Weed Preventer on our bermuda grass after painstakingly removing all the weeds that popped up this spring. So far we've had a few weeds pop up here and there, but only a handful at a time. Seems to have done the trick! My low back thanks you!
Date published: 2018-05-31
Rated 5 out of 5 by from Seems to be working I haven't had it long enough to say whether it truly does work for 6 months, but so far it has been 2 months and there has been no new weed growth. It's made gardening much easier. The shaker top makes it super easy to apply. I think it is a great product and I am loving my weed-free Spring!
Date published: 2018-05-27
Rated 5 out of 5 by from works great on my yard I bought this about a month ago and I am so happy that I did because it actually helped me with my garden and controlling weeds and I have never been so excited that I haven't had to pull weeds and my vegetables and herbs are flourishing because of the product and I haven't had to pull a weed yet!
Date published: 2018-05-24
Rated 5 out of 5 by from Super simple to use Now that the weather is nice we finally were able to pull the weeds up out of our patio. We sprinkled and spread pot the Preen weed control, which was super simple thanks to the easy pour spout. So far so good, we haven't seen any growth in between the patio stones so far.
Date published: 2018-05-24
Rated 4 out of 5 by from Keeps weeds down I used Preen Extended Control Weed Preventer in my flower beds. We've had a week of rain and I noticed there weren't as many new weeds popping up compared to other places it was not used. I received the product in exchange for an unbiased review, but it has only been used for a month, so I can't tell you how long it works. I'm happy so far.
Date published: 2018-05-24
Rated 5 out of 5 by from Easy to Use I re dived this a while back but just now able to use it. We recently moved to a acre of land. My husband just used it and was pleased with the ease of of the product. Looking forward to seeing the weeds gone soon.
Date published: 2018-05-23
Rated 5 out of 5 by from Worked like a champ!’ This s has been helpful in keeping the weeds down in out yard. We had a couple of spots that we kept having issues with it growing again and now that is fixed. I will use this in the future if necessary. Very happy!!
Date published: 2018-05-17
Rated 5 out of 5 by from Soooo AMAZING Works great!! I used this around my flowers, where I was afraid to cut with the weed eater and it worked wonders. Very easy to use too. I am also glad it did not have a harsh smell as a lot of weed killers do, this one was not over powering.
Date published: 2018-05-12
Rated 5 out of 5 by from Love this weed killer Love this product! It has kept weeds out of my flower beds for a few weeks so far. Weeds need to be pulled first but then it is easy going from there! I love Preen products. They have nade my life so much easier!
Date published: 2018-05-10
Rated 4 out of 5 by from Wonderful control of weeds I received this a little late to control the weeds I already had growing in my drive way. But I sprinkled Preen extended weed control on my drive way anyways. Spreding was easy due to the top of the lid. I have not seen any new weeds since I laid the control down 2 weeks ago. Very happy with product.
Date published: 2018-05-09
Rated 5 out of 5 by from Works great!! I used this around my flowers, where I was afraid to cut with the weed eater and it worked wonders. Very easy to use too. I am also glad it did not have a harsh smell as a lot of weed killers do, this one was not over powering.
Date published: 2018-05-08
Rated 5 out of 5 by from Works well I receieved this product in exchange for my honest opinion. The extended control weed killer works really well. I havent had it long enough to give an exact length of time that it works for but as of now I am extremely pleases with this product.
Date published: 2018-05-07
Rated 5 out of 5 by from Kills Weeds Dead! The product is fantastic. Our backyard had become littered with weeds, especially in the garden area. After sprinkling this in the garden bed, the weeds not only started to vanish, but they have yet to grow back again. Will definitely get this one again!
Date published: 2018-05-07
Rated 2 out of 5 by from Got weeds 11 days later I followed the directions and I already have weeds, 11 days later. It's possible I didn't spread the weed control thick enough, but I did a fairly extensive overview of the landscaping area. However, I do not have weeds in the small area around my tree...yet. It's easy to spread and use, but I'm not sure what the areas are going to look like in 11 more days. I provided pictures of two of the weed areas that are already growing. I gave two stars instead of one because my small tree area is still weed free.
Date published: 2018-05-03
Rated 5 out of 5 by from So far..so good!! I received Preen Extended Weed control about the end of March. It is now May and I haven't seen a weed yet!! I like this product alot better than the weed killer. Weed killer will leave ugly brown dead spots all over as with the Preen weed contol you do need to oull the weeds first and it takes care of the rest!! No ugly brown spots and no weeds!!
Date published: 2018-05-02
Rated 4 out of 5 by from no more weeds i just purchased a new home that has a beautiful brick pathway .however its covered in weeds .i like that i can easily take this bottle and sprinkle it around the house ive already remived weeds from and prevent more from coming up .the bottle is nice to carry and feels great in hand .i like that its easy to use just sprinkle than add water to activate it .within a few weeks i noticed alot less weeds in the areas i applied the granules
Date published: 2018-05-01
Rated 5 out of 5 by from Shocked I did have to read the book before using, but after it was pretty simple , I didn't see results quickly but after 2 weeks i did notice quit a big difference in my yard. So with that said I would definitely buy an recommend this product to my friends and family.
Date published: 2018-05-01
Rated 4 out of 5 by from So easy to use! The Preen extended control weed preventer bottle has been great to use so far! I have a section of land that I started a small flower garden in a few years ago. Unfortunately it was never successful because the weeds overtake it every year. They seem to grow faster than I could get rid of them! Nothing i tried worked. I'm going to try again this year using the pen Preen in hopes that I can finally get my weeds under control! I love how easy and fast it was to use. Just sprinkle on, activate with water and you're good for 6 months. It's still early in the season to see how well this works, but so far it's great! I used it a few weeks ago and there's been no signs of weeds since. This is a great product that I highly recommend!
Date published: 2018-05-01
Rated 4 out of 5 by from Easy to use and works well! I really liked this Preen weed control product. It seems to work well on my lawn so far and was so easy to use! The cool part about it is the pourer - it sprinkles evenly across the lawn via the bottle opener, and I haven't see that before. You literally just walk across the lawn sprinkling it around. Good product overall!
Date published: 2018-04-30
Rated 5 out of 5 by from Great product I received this as a free sample from try it sampling and it actually helps to prevent weeds. We finally had some good weather and got to work in the flower bed and garden, after using this, we have less weeds to come back.
Date published: 2018-04-30
Rated 4 out of 5 by from Easy to use The Preen Extended Control Weed Preventer is very easy to use, just sprinkle and add water. It is lightweight and simple to handle. Several applications will be needed for full effectiveness. The directions are very clear on the bottle, so no guesswork. The sprout design is easy to use, however the product does catch in the hinge of the spout and will have to be shaken clear or it won't close properly. Please note that it is NOT for edible gardens, i.e. Vegetables, Fruits, Herbs.
Date published: 2018-04-29
Rated 5 out of 5 by from What Weeds! I know some people love pulling weeds. Wake up early Saturday morning, go out in the yard, wave at the neighbors, say hi to the joggers. If this is you, don't buy this product. If you don't like pulling weeds and would rather sleep in on the weekend, you need to purchase and use this product. It is great. I have been using Preen for years, and it is the only weed prevention product I trust. Easy to use, easy to determine where it has been applied, and works great and lets me stay in bed on the weekends.
Date published: 2018-04-29
Rated 5 out of 5 by from Awesome! I was so excited to use this, because I absolutely hate pulling weeds! I mean, who really does. I followed the directions and boy, this really works! I had a few weeds come through but I do believe no product will eliminate all weeds. Give this product a try, you will not regret it!
Date published: 2018-04-29
Rated 4 out of 5 by from So easy to treat for weeds We love how easy it is to treat the yard for weeds just sprinkle the area you want to treat and then water. We treated around our mailbox and the weeds the next day were wilted looking and by day 3 were dead.
Date published: 2018-04-28
Rated 5 out of 5 by from So far so good!! I have to say , I’m loving this Preen weed preventer in my garden! I applied it 2 weeks ago and have not seen any new weeds in my flower beds! I’m so happy! I’ve already recommended to a few family members and friends! Thank you !
Date published: 2018-04-28
Rated 5 out of 5 by from This stuff is top notch! I am so glad I was able to give this a try. It has performed beautifully. The area it's being used was always our problem area. Now it's our most talked about area. I have recommended this to several people.
Date published: 2018-04-28
Rated 5 out of 5 by from Works great Worked very well on my weeds. I have a brick path way that always gets weeds poking through and it's a pain to maintain all the time. I just put some of this product in between and so far so good! Very minimal weeds, next time I'll use a little more product. I love it!
Date published: 2018-04-27
Rated 3 out of 5 by from Results vary We placed this in two areas. One in a flower bed area with newly planted flowers and the second under a weed barrier screen below our new pool. While the area that is also covered by weed barrier remains free of weeds we do see a couple popping up in our flower bed area. We are going to pull them and try to lay another layer to see if this product works on exposed areas. Application was easy with the flat spout to evenly distribute on the ground so I do like that.
Date published: 2018-04-27
Rated 3 out of 5 by from User Friendly The overall packaging of the product is good . I like the resealable lid. It stores nicely and out of reach of children and pets. When It came time to use I was able to control the amount of product and the areas that needed coverage. With the growing season just beginning I am concerned there could be damage to my sprouting plants. With that said, the instructions state they should be fine. I was relieved to read that and am grateful of the reassurance. I am looking forward to not having to pull weeds ALL spring- summer long.
Date published: 2018-04-27
Rated 5 out of 5 by from Works as described I purchased this about a month ago to treat some stubborn weeds that were giving me some grief. A short time after applying the treatment the weeds began to die. Some of the very stubborn weeds seemed to react to it as well because they were easy to pull after. I guess the roots were dying.
Date published: 2018-04-27
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