[header] How to safely dispose of paint [title] Consider saving it for a later project. [step] Latex paint can be stored for up to a year and then mixed and reused for a later project. It won't be the exact color you need, but it's useful to use as a base paint or to paint interior surfaces that won't be seen. 
This way, you can use up all the paint without needing to throw it away. [substeps] Tightly seal the used paint can and store it upside-down in a cool, dry storage area.