Bayer Seresto Large Dog Flea & Tick Collar, Over 18lb

Seresto, 27.5" adjustable, large dog flea & tick collar, for 8 month protection against fleas & ticks for puppies 7 weeks of age & older & weighing up to 18 lb, starts to repel & kill fleas within 24 hours of initial application & re-infesting fleas within 2 hours, repels & kills ticks within 48 hours of initial application & re-infesting ticks within in 6 hours, works on contact, odorless & non-greasy, quick release feature & visibility reflectors provide extra safety, water resistant formula continues working for up to eight months, even after bathing, swimming & sun exposure.