Fleas in and around your home will feed on the blood of virtually any warm-blooded animal they encounter, including you and your pets. They can cause extreme discomfort and spread serious parasitic infections, like tapeworm. Female fleas can lay up to fifty eggs each day. The eggs fall off your pet and develop into worm-like larvae, which hide in carpeting, furniture, bedding, and other dark places. The larvae mature as they feed on fecal matter dropped by adult fleas, and the cycle continues. Adult fleas (typically the only fleas you can see, either on your pet or in your household) represent just 5% of any given flea population.