The Adams Flea and Tick Collar for Dogs kills adult fleas and ticks for up to 7 months. The active ingredient works its way to the surface of the collar and is rubbed onto the fur of the animal. The active ingredient moves through the oils and from hair to hair to cover the entire body and works even when wet. This collar can be fitted for all dogs with necks up to 26".

ADAMS Flea and Tick Collar for Dogs Kills and Repels Begins killing fleas and ticks immediately Provides full protection within a few days Kills fleas and ticks for up to 7 months Water Resistant Fits necks up to 26"