How to Harden Paint


You can't dispose of liquid paint in landfills. Municipal and private garbage collectors will therefore pick up paint for disposal only if it has been hardened. You could use commercial paint-hardening powder. However, clay-based cat litter is cheaper and more convenient. It is also biodegradable and nontoxic.

Things You'll Need

  • Clay-based cat litter
  • Open the can of paint. Add approximately the same volume of cat litter as the volume of paint left in the can.

  • Stir so that the paint and cat litter are thoroughly mixed. Allow 10 minutes for the paint to dry.

  • Add more cat litter if the paint is still soft or liquid. Stir and wait another 10 minutes. When it is ready for disposal, the mixture will be very thick.

  • Dispose of the can or other container in your regular garbage with the lid off.

Tips & Warnings

  • Paint can be transferred to a larger container if there is not enough room to stir in sufficient litter. In that case, dispose of the original can as regular garbage with the lid open. The lid must be open when disposing of the new container.
  • Do not try to harden oil-based paint, which is considered hazardous waste and must be taken to a proper facility for disposal.

Related Searches


  • Photo Credit Jupiterimages/Goodshoot/Getty Images
Promoted By Zergnet


You May Also Like

Related Searches

Check It Out

22 DIY Ways to Update Your Home on a Small Budget

Is DIY in your DNA? Become part of our maker community.
Submit Your Work!