Provecta Pro Collar The Provecta Pro Flea and Tick Collar for Dogs provides 6 months of protection against fleas, ticks, and mosquitoes for dogs and puppies 12 weeks and older. Each collar contains the combination of the active ingredients, deltamethrin and (S)-Methoprene. These ingredients have been found to to eliminate the risks associated with flea and tick bites. Highlights: Breakaway buckle Innovative mold injected collar Glide and guard technology Flexible, makes collar adjustable, engineered for comfort Water resistant. Kill adult fleas which may be a source of flea allergy dermatitis [FAD], flea bite anemia and tapeworm. Kill ticks which may transmit Lyme Disease, Rocky Mountain spotted fever, and babesiosis. Repel mosquitoes** before they bite.Contains an IGR (insect growth regulator) which halts the flea life cycle by killing flea eggs and larvae. Keep Out Of Reach of Children