Preen Garden Weed Preventer has an indefinite shelf life as long as the product is kept in a cool, dry area. Keep the container closed and away from food and domestic water supplies.

Preen Garden Weed Preventer can stain porous surfaces such as concrete, stone, vinyl, flooring, clothing, and shoes if Preen Garden Weed Preventer is not immediately swept off these surfaces or if Preen Garden Weed Preventer becomes wet on these surfaces. If you are storing the drum or bag in a potentially damp or humid location, place cardboard under the Preen Garden Weed Preventer container to prevent yellow stain seepage. In an attempt to lessen or remove a stain, try a citrus-based cleaner such as Goo Gone^® (a registered trademark of Magic American Products Inc.) or Orange Hantex (manufactured by Precision™ Laboratories Inc.).