Check the product label and local hazardous waste rules
Keep paint thinner in its original, tightly sealed container
Do not pour paint thinner down drains, toilets, or onto the ground
Do not throw liquid paint thinner in regular trash
Take unused paint thinner to a household hazardous waste facility or collection event
Let small amounts of used paint thinner evaporate only if local rules allow and in a well-ventilated, safe area away from flames
Mix paint thinner with absorbent material only if your local disposal program allows it
Place solvent-soaked rags in a sealed metal container with a lid
Dispose of solvent-soaked rags through hazardous waste collection if required by local rules
Contact your local waste authority for disposal instructions if you are unsure