Vectra 3D repels and kills fleas, ticks, mosquitoes, lice, mites (excluding mange mites), and biting and sand flies. Each tube protects your dog for 1 month preventing all flea stages from developing. Vectra 3D is quick drying, non-greasy and waterproof. It begins reducing flea feeding in 5 minutes, kills fleas that may cause flea allergy dermatitis, repels and kills Brown dog ticks, American dog ticks, Deer ticks, Gulf Coast ticks and Lone Star ticks for one month. Vectra 3D repels and kills mosquitoes that may transmit vector-borne disease. DO NOT USE ON CATS-MAY BE FATAL