Preen Southern Weed Preventer Plus Fire Ant, Flea & Tick Killer

Preen Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer Bottle is rated 4.4 out of 5 by 19.
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Preen Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer is a one-step solution to two major problems that plague Southern gardeners. This dual Preen product stops tough Southern weeds before they start, while also killing listed insects including foraging fire ants, fleas and the ticks that may carry Rocky Mountain spotted fever and Lyme disease. 

Formulated specifically for the long Southern growing season, this product is for use in flower and landscape beds, xeriscapes, rock gardens and around groundcovers, trees and shrubs. It does not kill existing weeds, but prevents new weeds from growing. It kills listed insects on contact. It kills foraging and surface insects and is not for use on insect mounds or tunnels.

You can apply the product any time during the South’s long growing season to prevent listed weeds from growing and to kill listed insect pests on contact. One bottle protects 1,000 square feet for up to 4 months when used on top of soil or mulch. Reapply every four months to extend protection all season long.

Weeds that don’t grow don’t need to be pulled. Dead insects don’t sting, bite or do damage. Without weeds, your plants are free to grow big and strong. Without troublesome insects, you are free to enjoy your flower and landscape beds.

Plant Check
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View the complete list of compatible plants for Preen Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer
Quick Links

Application

When to Apply

Apply Preen Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer anytime during the growing season. Apply only around established plants and transplants. It should not be used on flower seeds, but may be used after flowering plants have germinated and are 2-3 inches tall. Since it does not kill existing weeds, you must first remove any that have already begun to grow. Once activated, the product continues to tackle listed weeds and insect pests for up to four months per application.

How to Apply

Sprinkle the product granules evenly over soil or mulch in flower and landscape beds. Apply when plants are dry so granules don’t stick to foliage. If stray granules land on foliage, brush them off. It’s very important to water the product in, or apply just prior to rain. This activates both the weed preventer and the insect killer. Do not water to the point of run-off. Once activated by watering in, this product forms a barrier in the top surface of soil that prevents listed weed seeds from germinating. The product will also kill listed insects on contact that enter the treated bed. This is a surface insect control product — do not apply to insect mounds or tunnels. Disturbance to the soil surface after activation may result in erratic control.

Applying with Mulch

For best control of listed weeds and insects, we recommend applying Preen Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer on top of mulch. Spread a layer of mulch on your flower and shrub beds, then sprinkle the product on top. Water the product into the mulch to activate. Always brush off stray granules from plant foliage.

THIS PRODUCT IS NOT FOR USE ON VEGETABLE GARDENS OR LAWNS. IT IS NOT FOR DIRECT APPLICATION TO INSECT MOUNDS OR TUNNELS.

This is not the product label. Always read and follow directions on the product label. Use only as directed.

FAQ

Do you offer coupons, rebates, etc?

We, as the manufacturer of Preen, do not offer any coupons or rebates. However, very often our retailers or mass merchants offer their own special sale price, coupons or rebates. Local flyers, newspaper inserts and media advertising can alert you to these offers.

General Product Questions

How does Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer work?

Once activated by watering, Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer creates a barrier in the top layer of soil or mulch, preventing listed weed seeds from germinating and killing listed insects on contact. The barrier lasts up to 4 months.

What is the active ingredient in Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer?

0.27% herbicide Dithiopyr (Dimension).
0.11% insecticide Bifenthrin

What are the other ingredients in Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer?

Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer also contains granulized corncobs as the carrier agent.

What does “Southern Gardens” mean on the Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer label?

The term “Southern Gardens” refers to gardens that grow in climates with longer warm seasons than the north, especially Plant Hardiness zones 7-10. This product is for use in flower and landscape beds, xeriscapes, rock gardens and around groundcovers, trees and shrubs. This product is not for use on vegetable gardens.

How long does Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer prevent its label listed weed seeds from germinating?

Up to 4 months per application. Reapplication may be necessary sooner if heavy rain occurs.

What weed seeds does Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer prevent from germinating?

See our list of weeds controlled or the product label.

What weeds does Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer kill?

None — it does not kill or inhibit existing weeds in any way. It is a weed preventer that stops new weeds before they start. Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer helps to prevent its label listed weed seeds from germinating up to 4 months per application.

How long does Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer continue to kill its label-listed insects on contact?

Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer is a long-residual pyrethroid insecticide that kills surface foraging insects on contact. Once the broadcast granules are watered in, it continues to kill listed insects on contact. Reapply the product every 4 months.

Where should Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer be used to kill listed insect pests?

Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer is for use in garden and landscape beds and around non-bearing fruit and nut trees. It kills surface insects on contact as they forage. Broadcast the granules on top of the soil or mulch in flower beds, xeriscapes, rock gardens and around groundcovers, trees and shrubs. Do not apply this product directly to insect mounds or tunnels. Do not use in vegetable gardens, around bearing fruit or nut trees or on lawns.

What does “established plant” mean on the Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer label?

The term “established plant” refers to flowers, trees and shrubs at least 3″ in height, not recently transplanted and having a strong root system.

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

The term “non-bearing fruit and nut trees” refers to established fruit and nut trees that are not presently bearing fruit or nuts. Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer cannot be applied around fruit and nut trees that are bearing, or will be bearing during the product’s active period.

What are the particles on the soil surface after I watered Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer?

They are a carrier agent. The granules are made of corncobs and will biodegrade over time.

Can I walk on a Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer treated area?

Avoid walking on a treated area. Disturbance to the soil surface after product activation may result in erratic control.

 
Will rain wash Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer away?

No, but heavy rains may shorten its effective period.

Why is the Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer container not full?

Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer 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

When do I apply Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer?

Anytime during the growing season when the ground temperature is at least 50–55 degrees.

Do I have to weed first before applying Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer?

Yes; Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer does not kill existing weeds, so you must hand-pull or dig existing weeds first. Note that Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer will not control weeds that are tilled under.

When do I reapply Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer?

Reapply every 4 months in the growing season.

Can Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer be applied when plant foliage is wet?

No; as plant injury could result from granules that stick to foliage.

Must Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer be watered-in?

Yes. Rain or water must immediately follow application to activate Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer.

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

Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer will not start to work until rain or watering occurs. If watering is not an option, time your application with rain. Lightly rake Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer into the soil surface to protect it from sunlight until rain occurs.

How much Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer do I apply?

Apply at a rate of 0.68 ounces per 10 square feet per application, and no more than 4.25 pounds per 1,000 square feet.

Can Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer be applied on plant foliage or plant roots?

No, plant injury could result.

What do I do if Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer accidentally got on plant foliage during application?

Gently brush off any stray granules of Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer gently off plant foliage.

How do you use Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer with established flowers, shrubs, and trees?

Ensure the flowers, shrubs and trees are listed on the label. Remove existing weeds and weed roots. Then, apply Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer and water thoroughly.

When do I apply Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer with bulbs?

Apply on dry weed-free garden soil when any of the label recommended bulb plants are at least 3″ in height out of the soil. Water immediately after application.

How do you use Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer with groundcovers?

Ensure your groundcovers are fully established and are listed on the label. Remove existing weeds and weed roots. Then, apply Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer around the dry foliage. Water thoroughly.

Does Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer control weeds that are tilled under?

No. Weeds that are not completely removed will emerge again.

Do I apply Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer by hand?

No. Apply using the Preen bottle with shaker-applicator cap.

Can I mix Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer with water before application?

No. Mixing with water dilutes the active ingredient and renders Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer ineffective.

Storage & Safety

Where can I find emergency medical information for Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer?

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

When can people and pets enter an area that was treated with Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer?

After the treated area is thoroughly dry from the first rain or watering.

How do I dispose of Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer or its empty container?

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

What can I do if I applied Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer to my lawn, grass or flower seeds, a non-recommended plant, etc.?

The active ingredient should be neutralized using activated charcoal granules. 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 and wait two days. After two days, the active ingredient in the product will be neutralized.
What happens if Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer was over-applied?

Injury may occur to plants.

Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer was over-applied in my garden. How can I save my plants from injury?

If rain or watering did not occur: Physically remove Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer.

If rain or watering did occur, or if you were unable to physically remove Preen® Southern Weed Preventer, neutralize Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer following these steps.

The active ingredient should be neutralized using activated charcoal granules. 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 and wait two days. After two days, the active ingredient in the product will be neutralized.
Does Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer expire?

No. Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer has an indefinite shelf-life as long as it's sheltered from moisture and sunlight.

Can Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer be stored for next year?

Yes. Store in a dry place away from sunlight and moisture, atop a piece of cardboard or an old newspaper.

Use with Seeds and Young Plants

Will flower seeds or grass seed germinate with Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer?

Flower seeds or grass seed will not germinate or reseed while Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer is active (about 4 months per application).

When can I sow seeds or transplant plants after an application of Preen® Southern Weed Preventer?

Wait 4 months from when Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer was applied.

Use Around Vegetables

Can Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer be applied to a vegetable garden?

No. This product is not listed for use on vegetable gardens.

What if I applied Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer to a vegetable garden?

Dispose of the vegetable plants and do not eat vegetables from the treated area for one year. Vegetables can be replanted in one year.

Use with Mulch

Can Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer be applied on top of mulch?

Yes. After removing existing weeds and weed roots, rake the mulch to loosen it, and ensure the mulch is 2-3” thick. Then, apply Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer and water thoroughly.

Can I apply Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer before mulching?

Yes, after removing existing weeds and weed roots. Then, apply Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer and water thoroughly.

Where to Apply Preen

Can I use Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer on my lawn or with grass seed or sod?

No. Turf injury could result. Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer is not labeled for use on lawns.

Can I use Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer in or near a pond, lake, or other type of waterway?

No. Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer is harmful to aquatic life.

Can I use Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer around, under, or near a swimming pool, sandbox, playground type areas, under bird feeders, etc.?

No.

Can I use Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer in or near a greenhouse or any type of enclosed area?

No. Volitization could occur causing plant injury.

Can I use Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer where chickens, horses or livestock graze?

No.

Can I use Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer on a garden slope or hillside?

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

Can I use Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer with a plant that is not listed in the recommended established plant section?

Yes, but use caution. Make a trial application of Preen at the recommended rate around one or two plants. Observe the plants for 30 to 60 days. If plant injury results, do not use Preen around other plants of the same species. (NOTE: Consumer assumes liability for any plant damage resulting from the use of Preen around plant species not recommended on the label.)

How close can I apply Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer to a non-recommended plant?

We recommend keeping Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer at least 12-inches outside the drip-line from a non-recommended plant.

Can Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer be used in potted plants or planter boxes?

No, plant injury could result.

Can I apply between bricks or patio blocks, on pebbles or on other hard surfaces?

Yes.

What plants are recommended with Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer?

See our plant compatibility tool or the product label.

Where to Buy Preen

Is Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer available outside of the United States?

No. Preen® Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer is not available or registered outside of the United States.

Can I order Preen Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer on your website?

No, but the product is available at most Southern home and garden centers. Use our store locator to find a retailer near you.

Insects Controlled

  • Annual Bluegrass Weevils (Hyperodes) (Adult)
  • Ants
  • Imported Fire Ants (Adult)
  • Armyworms
  • Billbugs (Adult)
  • Crickets
  • Cutworms
  • Black Turfgrass Ataenius (Adult)
  • Centipedes
  • Chinch Bugs
  • Earwigs
  • Fleas (Adult)
  • Fleas (Larvae)
  • Grasshoppers
  • Leafhoppers
  • Mealybugs
  • Millipedes
  • Mole Cricket (Adult)
  • Mole Cricket (Nymph)
  • Sod Webworm
  • Ticks (including ticks that may transmit Lyme Disease and Rocky Mountain Spotted fever)

Weeds Controlled

Available Sizes

  • click to enlarge
    Preen Southern Weed Preventer Plus Fire Ant, Flea and Tick Killer Bottle (4.25 lbs)
    Covers 1,000 sq ft
    2464033
     

Reviews

Rated 3 out of 5 by from Stubborn weeds! It worked okay...I've got really stubborn weeds and maybe some of the weeds weren't recognized?
Date published: 2017-06-08
Rated 4 out of 5 by from Works Really Well Easy to apply and it works really well. Could last a little longer but worth the effort. Good product overall.
Date published: 2017-06-01
Rated 5 out of 5 by from Fire ant killer This product is very good at killing fire ants, i had forgot but got really good results in weed control. Thanks Preen.
Date published: 2017-05-31
Rated 5 out of 5 by from Got rid of the fire ants and weeds! It was nice to find a product that got rid of the fire ants and weeds all in one product. now I don't have to worry about getting bitten when working in the garden. Great product thanks.
Date published: 2017-05-30
Rated 5 out of 5 by from those nasty little suckers a new year and new results without bending over to rid the yard
Date published: 2017-05-30
Rated 4 out of 5 by from Worked Really Well, Not As Long Lasting As I Like This worked really well, but it didn't last as long as I would have liked.
Date published: 2017-05-30
Rated 4 out of 5 by from Not To Bad Still Not The Best Have used for a few years now and have very good results keeps ants to a minimum as for flea and Tick do not know as never had that problem
Date published: 2017-05-17
Rated 5 out of 5 by from Awesome! My neighbors dog keeps getting into my vegetable. I was constantly have to chase him out of the yard. This dog is a waling flea, tick, and whatever else you can think of carrier. So I bought a bottle of Preen to kill the fleas & ticks that this dog brings into my garden. I am very pleased with the results. This stuff work great! Thank you Preen
Date published: 2017-05-17
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