In contrast, pets treated monthly with FRONTLINE Plus saw a reduction of 49.5 percent at one month and a reduction of 54.8 percent at two months.???1 Flea control is critical to maintaining good pet health, as fleas can cause anemia and allergic dermatitis, and can also transmit bacteria and other parasites to dogs and cats.2 The success or failure of products for flea control depend on a product?