Zodiac Flea and Tick Collar for Large Dogs

Zodiac FleaTrol Flea and Tick Collar for Large Dogs necks up to 25". For dog over 12 weeks of age protection from adult fleas and ticks.Kills fleas which may transmit tapeworms.Works in as little as 24 hours.Works even after temporary wetting.Provides 7 months of protection.Continuous action begins the moment the collar is applied and continues even when wet. A variety of sizes ensure proper flea and tick control. Measure circumference at base of dogs neck.Zodiac FleaTrol Flea and Tick Collar for Large Dogs Active ingredient: Propoxur.