This Dog Flea Powder is suitable for all dogs and puppies over 12 weeks of age and helps kill and control fleas to prevent your dog itching and scratching. Did you know that fleas are one of the most common parasites caught by pets. They are not just an inconvenience their saliva is considered one of the most allergenic substances on earth and is the cause of a nasty skin disease in pets called Flea Allergic Dermatitis (FAD). Also when they bite fleas ingest blood. If the infestation is severe enough it can cause anaemia or even kill a small puppy or kitten.