3 months supply. Dogs & puppies 12 weeks of age & older. Kills fleas, flea, eggs, ticks and mosquitoes. Kills & repels fleas up to 3 to 4 weeks. Breaks flea life cycle. Kills and repels mosquitoes. Pleasant citrus scent. Protects against blood feeding by mosquitoes (vector of heartworm) up to 4 weeks. Kills and repels ticks including deer ticks (vector of Lyme Disease) for up to 4 weeks. Kills and repels Brown Dog Ticks (Rhipicephalus sanguineus) and American Dog Ticks (Dermacentor variabilis) for up to 3 to 4 weeks. PreTect Squeeze-On Flea & Tick Control for Dogs is an effective and easy to use product. PreTect Squeeze-On Flea & Tick Control for Dogs has demonstrated greater than 92% control of fleas within one day of application. PreTect Squeeze-On Flea & Tick Control for Dogs prevents eggs from fleas on treated dogs from developing into biting adults for up to 123 days. As with all flea and tick control products, PreTect Squeeze On Flea & Tick Control for Dogs should be used as part of a program aimed at reducing flea populations in the dog's environment (bedding, carpets, kennel, yard). Consult your veterinarian, entomologist, or retailer for program recommendations.