How do you get rubber cement off of paint brushes?

Though most people suggest using rubbing alcohol to remove acrylic paint from rubber, a less-messy way would be to use a GUM ERASER (like this: michaels.com[slash]generals-gum-eraser[slash]10802793.html). It works very quickly and easily, and all you have to do is pick off balled up pieces of rubber from the eraser, so that you have a clean edge to work with to continue with the paint removal.