Adams Plus Flea & Tick Collars work in two ways to give your dog long-lasting flea and tick protection. It quickly kills existing insects and then kills flea eggs and larvae to protect against further infestation for up to 5 months. The fast-acting collar starts working as soon as it's placed around the dog's neck. Waterproof with a fresh powder scent. Not for dogs under 12 weeks of age.
Small: Up to 15" necks Large: Up to 25" necks
Main/active ingred: Propoxur 10%, S-Methoprene 2.1%
Replace dog collars after 5 months for full protection. No need to remove when pets swim or are out in the rain.