Makes for a cleaner interior. Put the ice in a big thick plastic bag and break it up with a dead blow hammer. Lets you get better contact with the surface. After you see frost on the underside hit the area with the dead blow softly to break it loose. It took 15 minutes to strip the entire RX8. If you have a lot of melt strips and liner to remove just go by the welding supply place and get a dewer of liquid nitrogen, it is really fast with that.