How to Dispose of Paint
The rule depends entirely on the type. Latex (water-based) paint can go in household waste once it's fully dried out — and drying it is easy. Oil-based paint is hazardous waste and must never go in the bin, wet or dry. If you're in one of the PaintCare states, drop-off is free at hundreds of paint shops. Here's how to tell what you have and what to do with it.
First: which type do you have?
Check the tin. If it says latex, acrylic, or "clean up with soap and water," it's water-based. If it says oil-based, alkyd, enamel, or "clean up with mineral spirits / white spirit," it's oil-based.
| Type | Also called | Disposal |
|---|---|---|
| Latex / water-based | Acrylic, emulsion | Dry it out, then household waste |
| Oil-based | Alkyd, enamel, solvent-based | ⚠️ Hazardous waste only |
| Spray paint | Aerosol | Hazardous waste — pressurised |
| Stain, varnish, lacquer | — | Hazardous waste |
| Paint thinner, mineral spirits | Solvents | Hazardous waste |
| Pre-1978 paint | — | ⚠️ May contain lead — see below |
Latex paint: dry it out
Liquid paint isn't accepted in kerbside waste anywhere, because it leaks in the truck and at the landfill. Once it's solid, most municipalities accept it as ordinary household waste. Three ways to get there:
Small amounts — just open the lid
Leave the tin open somewhere sheltered and out of reach of children and pets. An inch or so of paint dries hard in a few days to a week.
Larger amounts — add an absorbent
Mix in cat litter, sawdust, shredded paper or sand until it's the texture of thick porridge, then leave it to harden. Roughly equal parts works. This is much faster than waiting for a full tin to dry on its own.
Half a tin or more — commercial hardener
Paint hardener sachets cost a few dollars at any hardware store and solidify a full gallon in about ten minutes. Worth it if you have several tins.
Then check your local rule. Most municipalities want the lid off so crews can see the paint is solid. Some want the dried block out of the tin with the tin recycled separately.
Never pour paint down a drain, a storm drain or onto the ground — including rinsing brushes outside. Storm drains usually discharge straight to a watercourse without treatment.
PaintCare — free drop-off in participating states
PaintCare is an industry-funded programme operating in a number of US states, paid for by a small fee added when you buy the paint. Where it operates, you can drop off leftover paint free at hundreds of participating sites — mostly independent paint stores and some hardware chains.
They typically accept latex and oil-based paint, stain, varnish and shellac, usually up to around five gallons per visit. They generally don't take aerosols, solvents or paint thinner.
If you're in a PaintCare state you've already paid for this — it's worth finding your nearest site rather than drying paint out at home. Check paintcare.org for coverage and locations, since the list of participating states has grown over time.
Oil-based paint: hazardous waste, always
Oil-based paint, stain, varnish, lacquer, thinner and solvents are flammable and contain volatile organic compounds. They cannot go in household waste in any state, dried or not.
Take them to a household hazardous waste (HHW) collection — most counties run either permanent sites or periodic collection days. It's normally free for residents, and it's the same place your old motor oil, pesticides and pool chemicals go.
Aerosols count too. Even "empty" spray cans hold propellant under pressure and residue, which is why they can start fires in compactor trucks.
Paint from before 1978
Lead was banned from US residential paint in 1978. Older tins may contain it, and so may paint scraped or sanded off older homes.
Treat old paint and paint debris from pre-1978 properties as hazardous waste, and take it to HHW. If you're removing lead paint rather than disposing of a tin, that's a job with its own rules — the EPA has specific requirements for renovation work in older housing, and dry sanding is exactly what you shouldn't do.
Better than disposing of it
Most leftover paint is perfectly usable, and there's usually someone who wants it:
- Habitat for Humanity ReStore accepts usable paint at many locations
- Theatre groups, schools, community centres and scout groups reliably need paint and rarely get offered it
- Give it away locally — a full or near-full tin of decent paint moves quickly
- Some PaintCare sites redistribute usable paint rather than reprocessing it
Paint stores properly — sealed, upright, somewhere that doesn't freeze — lasts years. Latex paint that's been frozen is usually ruined; if it's lumpy or stringy after stirring, it's finished.
The tins themselves
Once the paint is fully dried, metal tins are recyclable as scrap metal in most areas, though some kerbside programmes want them in general waste instead. Plastic tubs vary by local rules. Leave the lid off so it's visibly empty.
Common questions
Can I throw away paint?
Latex paint, yes — once fully dried, in most areas. Oil-based paint, never. Check your municipality's rule on whether they want the lid off.
Can I pour paint down the drain?
No. It contaminates water treatment and, via storm drains, discharges directly to watercourses. This applies to rinse water from brushes and rollers too.
How long does paint take to dry out in the tin?
A thin layer, a few days. A half-full gallon, weeks. Add cat litter or a commercial hardener and it's minutes to hours.
Is PaintCare free?
Yes, at participating sites in participating states — the cost was included when the paint was bought. Check paintcare.org for current coverage.
What do I do with spray paint cans?
Household hazardous waste. Don't puncture them, don't bin them, and don't put them in kerbside recycling — the propellant makes them a fire risk.
Related
PaintCare state coverage and participating sites change; check paintcare.org. Municipal rules on dried latex paint vary by city. Lead paint removal is regulated separately — consult EPA guidance for renovation work in pre-1978 housing. Last verified August 2026.