"Magic" ice<unk>  used to treat a sports injury Industrial For spot-cooling of electronic components during troubleshooting, dimethyl ether or tetrafluoroethane may be used.<unk> s are also used to contract metal for assembly or disassembly of interference fit parts. The extreme temperature can cause viscoelastic materials to change to glass phase. Thus it is useful for removing many types of pressure sensitive adhesives. Medical Medical cryotherapy gun with liquid nitrogen In medical applications,<unk>  cans containing dimethyl ether or tetrafluoroethane may also be used to<unk>  and destroy tissue, for removal of warts and skin tags, or other uses in cryosurgery. Liquified petroleum gas including propane and butane is sometimes used. These all may also be used as a topical anesthetic, due to the numbing effect of cold, though there is risk of frostbite. Chloroethane may be used as a topical pain reliever, and an alternative to ice pack therapy to reduce inflammation and swelling. Since its boiling point is well above the<unk> ng point of water, there is less risk of<unk> ng the skin, though it can still be dangerous if misused. It may be used to treat sports injuries, where it is sometimes known as ice<unk>  or magic<unk> . Other<unk>  has been shown useful for the field marking of animals; for example marking the tails of monkeys. Research is continuing to help control the application dosage and time to minimize permanent damage to the animals.
Freeze spray
Hug machine
Sterile insect technique
Florida shuffle
Throat lozenge
Depot injection
Kambo cleanse
Caphosol