Flea & Tick Prevention from Proflax is a complementary feed supplement for dogs and cats. This 100% natural powerful powder blend contains no additives or fillers and repels fleas, ticks and mites. It is a fantastic natural alternative to harsh chemical treatments, keeping your pets immune, nervous and digestive systems healthy and strong. The odour of each of the added ingredients is released through your pets skin, deterring parasites from hitching a ride!