Recently had a disaster with WalMart rattle cans, so I used Super Clean degreaser (from the automotive section of WallyWorld) to strip the enamel paints. I soaked my parts overnight and then ran water over them to remove most of the paint. Stubborn areas came off with just a quick scrub with the toothbrush. It is supposedly safe enough to dispose of down the drain, but be sure to wear gloves when handling it - it tends to do funky things to bare skin after prolonged exposure!