
Paint can be toxic and dangerous to the environment if it’s not disposed of properly. Oil-based paints contain chemicals that contaminate soil and water, and it is illegal to throw them in the trash in most states. Latex paint, on the other hand, is not hazardous and can be disposed of in the regular trash if it is dry. To accelerate the drying process, mix cat litter into the paint. If you are not sure whether the paint cans are completely dry, it is best to treat them as hazardous waste. Local regulations vary, so it is important to check the paint-disposal procedures in your area.
| Characteristics | Values |
|---|---|
| Paint type | Latex, water-based, solvent-based, oil-based |
| Paint disposal method | Leave the lid off to dry out, use cat litter to speed up the process, dispose of with regular trash |
| Paint can disposal method | Remove the lid, dispose of separately with regular trash |
| Oil-based paint disposal method | Dispose of at a hazardous waste facility or drop-off event |
| Local regulations | Vary from city to city, check with your municipality |
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What You'll Learn

Letting paint dry out before disposal
Paint can be toxic and dangerous to the environment if it is not disposed of properly. It is important to know how to throw paint away safely.
If you are disposing of latex paint, you can let it dry out and then put it in the trash. Different areas may have different requirements and restrictions, so it is important to check your local regulations. Some municipalities may prohibit old paint disposal, while others may require that only solidified latex paint be thrown into the garbage.
To dry out latex paint, you can simply leave the lids off the cans and let them dry. If you want to speed up the process, you can mix in cat litter or shredded newspaper, stir, and then let the paint air dry. You can also pour the paint into a lined box or trash can and then pour in the cat litter. Once the paint has thickened and won't spill, you can throw the can and its dried contents into the garbage.
If you have large quantities of paint, you can leave the cans out in the sun to dry. However, this may only work for smaller amounts of paint, as one source noted that they had difficulty getting a larger amount of paint to dry completely in the sun.
If you are disposing of oil-based paint, you cannot throw it in the trash as it contains chemicals that can contaminate soil and water. It must be taken to a hazardous waste facility or drop-off event, or left on the curb during your community's hazardous waste collection day.
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Local regulations for paint disposal
United States
In the United States, the Environmental Protection Agency (EPA) regulates hazardous waste, including paints, through the Resource Conservation and Recovery Act (RCRA). While water-based paints are typically not covered by RCRA regulations due to their non-flammable nature, compounds in both oil- and water-based paints, such as metallic pigments and additives, are considered hazardous wastes when disposed of.
The EPA suggests that for small quantities of latex paint, exposing it to air or mixing it with shredded newspaper to dry it out is an effective method. Once dried, it can be disposed of as regular trash. Alternatively, mixing latex paint with cat litter or paint hardener until it solidifies is another recommended approach.
Oil-based paints are considered hazardous waste and should be taken to an appropriate disposal or drop-off center. States like California specifically prohibit the intentional drying of oil-based paints without a permit and require leftover paint to be taken to a paint drop-off location.
Texas
In Texas, the Texas Commission on Environmental Quality (TCEQ) provides guidance on household hazardous waste (HHW) disposal. While HHW generated by households may be placed in regular trash, many communities in Texas offer HHW drop-off facilities or hold collection events for proper disposal.
Other Considerations
When disposing of paint, it is important to read product labels and follow local guidelines to ensure safety. Additionally, consider recycling or reusing paint whenever possible. Paint recycling programs, such as PaintCare in California, encourage the recycling of paint to create new products.
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Disposing of oil-based paint
Oil-based paints are considered hazardous household waste and cannot be solidified and placed in with the regular trash. They contain chemicals that contaminate soil and water. It is illegal to dispose of oil-based paints in the regular trash in most states.
There are several ways to dispose of oil-based paint safely. You can take the oil-based paint to your city or county's hazardous waste facility. Many cities host hazardous waste drop-off events at least once a year. You can also check for take-back programs near you, such as PaintCare.org, which operates in several states.
If you are unable to take your oil-based paint to a hazardous waste facility, you can try to donate it. Many charities and nonprofits need paint for community projects. You can also offer it for free on social media or listing sites like Craigslist or Facebook.
Some local fire departments may also accept oil-based paint. They will point you in the right direction if they do not.
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Recycling paint
Paint can be toxic and dangerous to the environment if it is not disposed of properly. It is important to know how to throw paint away safely.
Latex paint is not considered hazardous, and can be disposed of in the regular trash, but only once it has dried out. To speed up the drying process, you can mix cat litter into the paint. If you have more than half a can, you can pour the paint into a lined box or trash can, then pour in the cat litter. Stir the mixture until it thickens and won't spill, then leave it for an hour. Once it's dry, throw it in the garbage, making sure to remove the lid from the can.
Alternatively, if you participate in curbside recycling, pour the remaining paint into a cardboard box and place the empty can in your recycling bin.
Oil-based paints are considered hazardous waste and must be taken to an appropriate disposal or drop-off centre. These include your city or county's hazardous waste facility, or a local hazardous waste drop-off event. Many charities and non-profits also need paint for community projects.
In some states, PaintCare operates recycling programs on behalf of paint manufacturers. They have drop-off locations throughout King County and Washington, and there is no charge to recycle paint at these locations.
If you are unsure how long your paint has been sitting around for, there are a few ways to test if it has gone bad. If it smells rancid, or has a sour smell, it has likely gone bad. If it has a lumpy consistency and won't stick to a wall, it is no longer usable. Finally, check the bottom of the paint can for mould.
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Storing paint
Firstly, it is important to note that storing paint in the garage is generally not recommended, especially if you live in a location with extreme weather conditions. Paint that undergoes repeated cycles of freezing and thawing can become lumpy.
If you are taking a short break from a project (a few days or a week), simply reseal the can and keep the paint in a temperate environment, away from direct sunlight.
For longer-term storage, it is recommended to transfer the paint to a new container to prevent rust. Most types of leftover latex paint should be stored in a lined metal can or a glass or plastic container. If using a metal can, cover the chime with tape before pouring in the paint. Once the can is full, remove the tape and hammer on the lid. The chime must be kept clean to prevent rust.
Alternatively, you can use plastic containers such as empty juice bottles or takeaway soup containers. Plastic containers are also prone to letting in air over time, so it is recommended to use a smaller container to minimise the amount of air inside. If using a plastic container, seal the lid with tape to ensure airtightness.
To prevent evaporation and drying, some people recommend storing paint cans upside down. This ensures that the area where the lid meets the can is coated with paint, creating a better seal.
Other tips for storing paint include:
- Storing paint in a dry place, away from direct sunlight, food, and drink.
- Keeping paint out of the reach of children.
- Labelling the paint can with the brand, colour, type/product name, sheen/finish, and where/what it was used for.
- Storing painting tools such as rollers and brushes by wrapping them in clear plastic wrap to eliminate exposure to air.
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Frequently asked questions
Oil-based paint is toxic and can contaminate soil and water. It is illegal to throw it in the trash in most states. Instead, take it to your city or county's hazardous waste facility or a local hazardous waste drop-off event.
Latex paint is not hazardous, but you should still dispose of it properly. Remove the lid and let the paint dry out completely. Then, dispose of the can with your household trash. To speed up the drying process, you can mix cat litter into the paint.
If you have a large volume of paint, you can try offering it for free on social media or to a local charity or nonprofit. You can also contact your local waste management to see if they offer a pick-up service.
If you're unsure whether your paint is oil-based or latex, check the label or look up the manufacturer's instructions online. If you still can't determine the type of paint, it's best to dispose of it as hazardous waste.











































