Befar Defest is a long lasting insecticide that kills fleas in the home, fast. Routine flea control is an essential part of keeping you and your pets free from unwelcome parasites. Defest 3 Months is the ideal choice when fleas have already established themselves in your home. Apply to all rooms to which pets have had access. Combine treatment with regular vacuuming and wash all pet bedding at high temperatures. It may take several weeks to break their life cycle and completely eradicate fleas. Read more… Read the label carefully before using.