Benefits:For 8-month prevention and treatment of ticks and fleas on dogs and puppies 7 weeks of age and older and for small dogs up to 18lbs and large dogs above 18 lbs.Repels and kills ticks for 8 months, including Deer ticks vector of Lyme disease and anaplasmosis, American dog ticks vector of Rocky Mountain spotted fever and ehrlichiosis, Brown dog ticks vector of ehrlichiosis, anaplasmosis, bartonellosis, canine hemoplasmosis, babesiosis, and Rocky Mountain spotted fever, and Lone Star ticks vector of ehrlichiosis. Prevents tick infestations within 48 hours after application. Re-infesting ticks are repelled and/or killed as quickly as 6 hours. Quickly kills fleas on dogs within 24 hours and continues to prevent infestations for 8 months. Treatment with Seresto kills fleas and may reduce the risk of tapeworm infections Dipylidium caninum, bartonellosis Bartonella vinsonii, Bartonella spp., and rickettsiosis Rickettsia felis, which are types of canine vector borne diseases. Re-infesting fleas are killed within 2 hours with protection against further flea infestation lasting 8 months. Kills fleas before they lay eggs. Seresto aids in the control of flea larvae in the dog&rsquos surroundings following contact with a Seresto-treated dog. Kills chewing lice for one month. Aids in the treatment and control of Sarcoptic mange. No need to remove collar when your pet goes swimming or gets bathed. Bayer Polymer Matrix ensures that both active ingredients are slowly and continuously released in low concentrations. Make sure to replace the collar after 8 months for year-round pest prevention. Light reflectors for added visibility in the evening and at night. Active Ingredients: % by Weight Flumethrin* 4.5% Imidacloprid 10.0% Other Ingredients: 85.5% Total 100% * Trans Z-1/trans Z-2 ratio: max 66% trans Z-1 and min 34% trans Z-2 Seresto Collar for Large Dogs Over 18lbs.. I do not receive this product or any others in exchange for this article, I do get a commission for readers clicking the buy now links which helps to differ the cost of hosting this blog and I sincerely hope this article site helps you with your search for Vet Approved Rx products.