Here’s where we shift gears. If your paint smells like a chemistry lab and you used mineral spirits to clean your brushes, that’s oil-based paint. It’s a different beast.
Never ever throw oil-based paint in the regular trash. It’s considered hazardous waste because it’s flammable and full of toxins.
You need to take it to a household hazardous waste facility or a special collection event. Call your city or county—they usually have a drop-off day once a month. It’s like a road trip for your old paint.
The Leftover Latte Trick
For latex paint (the water-based stuff you used on your walls), think of it like a spilled latte. You wouldn’t dump that in the garden, right? Keep it out of the sink and storm drains.
A tiny bit of paint—like from rinsing a brush—is okay to go down the drain if you have a septic system or city sewer. But a whole can? That’s a plumbing nightmare.
If you’re unsure, always air on the side of caution. A little effort keeps your pipes happy and the environment cleaner.
How to Dispose of Paint (Full Guide)