Collar fits all dogs with neck size up to 26 inches long
Fits right over existing lead collar
Sustained release formula
Kills adult fleas and prevents new flea infestations
Water doesn't affect collar or dog's protection
Absorbine UltraShield Flea & Tick Dog Collar provides full-season (up to six months) protection against fleas and ticks. It is a reliable alternative to the spot-on treatments. Use the UltraShield collar year-round for optimum control. Replace every six months or sooner if needed.