Preen Garden Weed Preventer Plus Fertilizer can stain porous surfaces such as concrete, stone, vinyl, flooring, clothing, and shoes if Preen Garden Weed Preventer Plus Fertilizer is not swept off these surfaces or if Preen Garden Weed Preventer Plus Fertilizer 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 Plus Fertilizer container to prevent yellow stain seepage. In an attempt to lessen or remove a stain, try a citrus-based cleaner such as Goo Gone or Orange Hantex.

For disposal, securely wrap the unused product in several layers of newspaper and discard in trash. Do not refill the canister with anything but Preen Garden Weed Preventer Plus Fertilizer. Discard the container in the trash and do not recycle.