The undercoat rake is ideal for quickly and efficiently removing loose or frayed hair from the undercoat. By using the undercoat rake you also prevent the knotting of the hair. Use the rake before bathing or showering your dog. The underfur remains intact. Clean the underfur rake regularly with water and an antiseptic solution such as Dettol or Barbicide to prevent bacterial growth. Then let it dry well! For dog breeds like Collies, Shelties, Samoyeds, etc.