Ever set out on a painting project only to pour paint into your tray and make a MASSIVE mess? I know I used to get paint inside the rim groove, and when I placed the lid back, the paint would seal the can shut and goober everywhere… no good.
Instead of dealing with that, take a short disposable cup, and scoop out your paint! You can either rinse it or toss it, using a fresh cup with every color. Easy peasy, lemon squeezy.