This flea and tick collar offers an easy, topical solution to the pesky problem of dog fleas and ticks - and protects up to 6 months. Sentry Dual Action Flea & Tick Collar for Dogs uses ingredients including propoxur and phenothrin to kill adult fleas and ticks. Unlike topical formulas that require monthly application, this collar, once properly fitted and placed on your pet, provides protection for up to 6 months. Fresh Powdery Scent. Made in USA. 0.97 oz (27.5 g) collar. Fits necks to 23".
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