Boston's Zero Waste Directory

Did you know that Latex (water based) paint can be dried out and thrown away with your regular trash? Oil based paint must be brought to a Zero Waste Day for proper disposal.

HOW TO DISPOSE OF LATEX PAINT

1. Combine paint with cat litter, paint hardeners, or shredded newspaper.
   • Mix an equal amount of cat litter into the latex paint in the can. There are also commercial paint hardeners that you can purchase if you prefer not to use cat litter. Just follow the manufacturer’s instructions. Shredded newspaper can also be used to aid in clumping up leftover paint so that it dries faster. 
2. Allow the mixture to set.
   • Stir the mixture until it thickens and won’t spill. Allow the mixture to sit for one hour.
3. Throw it in the garbage.
   • Once the paint is completely dry, it can go into the garbage. Be sure to remove the lid from the can so collectors can see that it is dry.

PAINT TOO GOOD TO TRASH?

• Consider donating your leftover paint to someone who can use it.
• Be sure to store your paint properly to increase the chance of being able to reuse that paint.
  • Always store paint in a cool, dry location away from sunlight and extreme temperatures. Wipe away any excess paint on the outside of the can. Place a piece of plastic wrap over the opening and firmly seal it with taps from a rubber mallet. Store the can upside down to prevent air from entering the container.

how to dispose of motor oil:

If you cannot make it to a Zero Waste Day, there are several options available for the responsible disposal of motor oil:

• Return used oil for recycling to the store where you purchased it. Retailers are required to accept used oil for recycling (up to two gallons per person per day) if you have the purchase receipt.
• Some service stations and repair shops burn oil to heat their garage and will take back used oil from residents.
• Certain quick oil change chain locations accept used oil. Check the Yellow Pages online for a location near you.
• Call the MassDEP Used Oil Hotline at 617-556-1022. Also use this number to report retailers who are unwilling to accept used oil from customers who have receipts.