The Pro-cision Flo™ applicator (patent pending) easily penetrates the fur for improved application directly to your dog’s skin. This formula is a monthly treatment that kills and repels on contact fleas and ticks for up to 30 days, kills mosquitoes and kills and prevents flea eggs and flea larvae. Additionally it kills all stages of the flea life cycle and prevents re-infestation for up to 30 days. Use only on dogs over 12 weeks of age. Do not use on cats or kittens. Package contains 3 monthly treatments.