The most common parasites you can find on your cats or dogs are fleas. These parasites can make their way into your home through an open window, a crack in the door, your pets, or you, without even knowing it. Fleas can really be irritating and annoying for your cat or dog. They cause itching, hair loss, general discomfort, which can lead to worms and even diseases. The worst part of a flea infestation is what you can’t see: flea eggs and larvae, which can keep the flea infestation cycle going. Comfortis is indicated for the prevention and treatment of flea infestations on cats and dogs. Comfortis kills fleas before they lay eggs and keeps killing fleas for a full month. Comfortis is a chewable tablet for cats and dogs, which makes it easy to use, mess-free, and can’t be washed off when your pet is bathing or swimming.