How to Dispose of Latex and Oil-Based Paint
Liquid paint of any kind is strictly illegal to place in curbside trash because it leaks during truck compaction and contaminates stormwater. However, latex (water-based) paint can be dried out with cat litter or paint hardener and placed in standard trash, while oil-based paint must go to a hazardous waste facility.
Many retail paint stores (such as Sherwin-Williams or participating hardware stores in PaintCare states) accept leftover paint for free recycling. Always verify your local municipal hauler requirements before placing large items at the curb.
Step-by-Step Instructions
Check the can label. If it specifies soap and water cleanup, it is water-based latex or acrylic. If it specifies mineral spirits or turpentine cleanup, it is hazardous oil-based paint.
For half-empty cans of latex paint, mix equal parts kitty litter, sawdust, or commercial paint hardener into the can. Leave the lid off in a well-ventilated area until the paint solidifies into a firm dough.
Once completely dry and solid, place the open can in your curbside garbage cart. Leaving the lid off signals to collection drivers that the paint is completely solidified.
Never pour oil-based paints, varnishes, or stains into the trash or down storm drains. Store cans upright and deliver them to your local municipal Household Hazardous Waste (HHW) drop-off facility.
⚠️ Important Rules to Avoid Fines & Hazards
- Never pour leftover paint down the sink, toilet, or outdoor storm drain.
- Wet liquid paint in trash carts will burst during truck compaction, spraying streets and vehicles and resulting in heavy municipal fines.
- Empty metal paint cans can often be recycled in curbside metal bins once dried and scraped clean of dried residue.
Our directory covers 164 verified US cities with direct contact numbers, hauler websites, and neighborhood collection rules.
Frequently Asked Questions
Can you throw away completely dried paint?▼
Yes. Once latex paint is fully hardened into a solid clump with cat litter or hardener, it is classified as regular non-hazardous municipal solid waste.
What is PaintCare and where is it available?▼
PaintCare is a national non-profit stewardship program operating in states like California, Colorado, New York, Washington, and Illinois that provides free paint drop-off sites at retail hardware stores.
How do you dispose of spray paint cans?▼
If the aerosol can is completely empty and no pressure remains, it can be recycled with metal cans. If it still contains paint or propellant, it must be taken to a hazardous waste facility.