Flea collars can be dangerous and for them to be ... such as PetArmor, Adams, and Hartz. While collars designed to kill fleas ...

See reviews below to learn more or submit your own review. Hartz Mountain Flea & Tick Drops develops pet care products. Its offerings include topical flea and tick prevention for dogs and cats.

So while the Hartz UltraGuard Plus flea and tick collar ($7.00) is a viable preventative, it is not recommended for use in homes with young children and/or multiple pets. NexGard Monthly Oral ...

Hartz has a complete line of flea and tick products, including collars, shampoos, home and garden sprays, and its best prevention product; Hartz® UltraGuard Pro® Flea & Tick Drops for cats and dogs.