We permanently sand the original Thermo-Perch to help aid in trimming of nails and beaks. The sand also provides a nice easy grip surface. Low voltage UL Listed power supply. Attaches easily to wire cages. Reduces avian stress. Irregular shape reduces foot cramping and pressure sores. Sandy coating keeps bird feet and nails healthy Protect exotic birds from the harmful effects of air conditioning and cold drafts. Thermostatically controlled to an optimum body temperature. Made of sturdy scratch and bite resistant non-toxic plastic. Uses harmless, 12-volt, low voltage electricity to heat the perch.