What Counts as Household Hazardous Waste
HHW is any product labeled as flammable, toxic, corrosive, or reactive. Common examples include: latex and oil-based paints, paint thinners and solvents, pesticides and herbicides, pool chemicals, cleaning products (especially drain cleaners, oven cleaners), automotive fluids, fluorescent light bulbs (mercury), thermometers and thermostats (mercury), and propane tanks.
How to Find HHW Drop-Off Events
Most municipalities offer at least one HHW collection event per year, and many operate permanent HHW facilities. Search your city or county name plus 'household hazardous waste' to find local options.
The Earth911 database (search online) maintains a searchable directory of HHW facilities. Your state environmental agency website should also list events and permanent locations.
Paint: The Most Common HHW
Latex (water-based) paint is the most common HHW item. If it's still good quality, consider donating to Habitat for Humanity's ReStores, community organizations, or local theaters. PaintCare (in participating states) operates drop-off points at hardware stores.
Oil-based paint is hazardous and must go to an HHW facility. Latex paint can sometimes be dried out and disposed of with regular trash (leave the lid off to dry, or add kitty litter to speed drying) — but check your local regulations first.
Safe Storage Before Drop-Off
Keep all HHW in original containers with labels intact. Labels help handlers identify the material and process it safely. If a container is leaking, place it inside a larger plastic container to prevent spills.
Store HHW away from heat, open flames, and areas accessible to children and pets. Never mix chemicals — some combinations can cause fires, toxic gas releases, or explosions.
What to Do in an Emergency
If a hazardous material spills or someone is exposed, call Poison Control (1-800-222-1222) or 911 depending on severity. For large outdoor spills, contact your local fire department or environmental agency — they have hazmat response capabilities.