You LOVE your pets... they're like your children (just, with a little more hair). We feel the same way at PetTest, which is why we sought to take the pain out of injections, lancing, and insulin delivery. Enter: COOLshot. The most humane way to administer shots/syringes. COOLshot is a drug-free numbing device that works by chilling the skin or affected area, which in turn, numbs the tissue gently and temporarily. The solution inside is self-contained behind a metal barrier and never directly comes into contact with the animal. It is a medical-grade gel called Cellusize, which stays cold for an extended period of time. COOLshot numbs the area thoroughly so you (and your pet) don't have to dread the experience any longer! Simply hold the COOLshot to the planned injection site for 20 seconds or until the area becomes numb. The product is designed to be stored in the freezer.