This cleaner easily removes baked-on shelf primer (kiln wash) from the bottom of fused projects, even stubborn bits! Pour Wash-Away onto the residue directly or onto a non-metallic scouring pad and scrub away residue. Rinse throughly with water and dry. Or, you can fill a container with Wash-Away (enough so that it will cover your fused pieces), drop your glass into the solution, wait four minutes, and then remove the items from the Wash-Away and rinse. Eight ounce bottle.