How to Solidify Paint?

Mix saw dust or cat litter into the paint. Stir with a stick until well blended. (Alternatively, you can use a commercially made paint hardener, purchased from a paint or hardware store) Add more sawdust or litter as necessary, until the consistency of the mixture is crumbly.

How do you harden leftover paint?

Mix an equal amount of absorbent kitty litter or sawdust into the paint. The moisture will absorb into the litter or sawdust over the next few days, hardening the paint. Leave the lid off of the paint as it hardens.

How do you solidify paint for disposal?

The easiest and cheapest way to harden wet paint is to let it dry out naturally. After your paint project, just place the leftover paint in several disposable cans or containers until you only have an inch or less in each vessel. Then place them in the sunlight for heat to do its work.