What is the quickest way to dry paint so I can put in trash.

Fill the paint can with sand.

Take the lid off and let the air dry it as much as possible and then put kitty litter in and put the lid back on

Add Kitty litter and let the paint dry.

Paint an old board with many layers. When it dries, dispose of it.

Depending on the state that you live in, paint maybe considered hazardous waste, such as it is in California. If so, you cannot put it in the regular trash no matter how you prep it. You can however request a special pick up for hazardous waste items.

Hazard waste can't put in the trash

Hazard waste can't put in trash

You could also contact your local Habitat for Humanity or other recycler of paint, they might want your old paint! Otherwise try kitty litter or sometimes there's a special additive to dry out paint that you can buy at a Home Depot or that type of store.