How to Dispose of Weed Killer. Improper disposal of weed killers can allow chemicals to leak into storm drains, roadside ditches and from there, into lakes and rivers. They can enter our drinking water through the ground water and can cause potentially dangerous chemical reactions and illnesses to humans and animals. Disposing of weed killers properly is crucial, but not difficult.
Read the weed killer's label and follow its disposal directions carefully. Watch for words such as "Warning," "Danger" or "Caution." Call the phone number listed on the label if you have more questions about use or disposal of a particular weed killer.
Take leftover weed killer to a local household waste disposal facility. This is the best solution for large quantities of weed killer. There is often no charge for this service.
Store extra weed killer until your waste management company has a hazardous waste pick up day. Call to find out when a waste collection day is scheduled for your community.
Use absorbent material, such as cat litter or cloth towels, to clean up a weed killer spill. Place all contaminated material in a spill-proof container and dispose of it as you would excess weed killer.
Throw empty weed killer containers in the trash. Do not put them in a recycle bin.