Ticks and fleas are common throughout the United States, and these pests don't always stay outside. When ticks and fleas inhabit areas close to your home, pets and unsuspecting humans frequently bring them inside. Ticks and fleas can spell itchy misery for creatures they target, but they can also transmit serious diseases and quickly get out of hand indoors. By learning more about these common pests, you can protect your home and family from them before they get past your door.
The United States hosts about 80 tick species out of more than 800 species worldwide.1 But only a small percentage cause problems for humans and pets. Most U.S. tick species stay within defined regions. Their familiar tear-shaped bodies look similar, but distinctive head and back markings identify different species. Newly hatched ticks are as small as grains of sand, but adults may measure 1/2 inch or more after feeding. It's simple — and important — to get to know and recognize common backyard ticks in your region.
Blacklegged (or deer ticks), known by the scientific name Ixodes scapularis, are heavily concentrated in the Northeast and Upper Midwest. These are the main ticks behind Lyme-disease transmissions. The American dog tick or wood tick (Dermacentor variabilis), a leading vector behind Rocky Mountain spotted fever, is also abundant in the East and Central U.S. The brown dog tick (Rhipicephalus sanguineus) is the only tick found coast to coast.1 A worldwide range underscores this tick's unusual ability to live entirely indoors and become firmly established in homes.
Cat fleas have large hind legs for jumping onto hosts.
Out of an estimated 325 U.S. flea species, with more than 2,500 worldwide, only the cat flea is a serious U.S. pest.3 Cat fleas (Ctenocephalides felis) are the most common exterior parasite of cats and dogs in the United States.4 About 1/8 inch long, these reddish-brown fleas are slightly transparent; after feeding, their blood meals are visible inside. Cat fleas have bodies flattened from side to side, enabling easy movement through thick fur. Like the brown dog tick, cat fleas regularly infest U.S. homes.
All ticks hatch from eggs and mature through three active stages: larva, nymph and adult. The tiny larvae, sometimes called seed ticks, have six legs; nymph and adult ticks have eight. Otherwise, the three stages look very similar. Most ticks feed on different hosts at each stage — each active stage needs a blood meal to survive. Larvae and nymphs feed on birds and small mammals, such as mice, while nymphs and adults turn to larger prey, including pets and humans. Ticks don't jump or fly; they grab onto hosts they contact, often in tall grasses and weeds or low-hanging shrubs.
Tick lifespans vary, but some species can live for years.1 Blacklegged ticks mature in a two-year span, while American dog ticks may live two to three years in each feeding stage.1 Both male and female adult ticks seek a final blood meal, which lasts over several days, before they die. Males usually feed, mate and then die. However, they can mate before feeding and dying. Engorged females can grow to 120 times their previous body weight. Then they drop from their host, lay a single egg mass and die. Female brown dog ticks typically lay 5,000 eggs per batch; some species lay more than three times that amount. Indoor infestations may go unnoticed until eggs hatch, and tick larvae cover walls and window coverings.2
Wood ticks lay a single mass of eggs before dying.
Cat fleas also hatch from eggs, but they pass through three worm-like larval stages and then pupate in sticky cocoons that attract camouflaging dirt and dust. When adult fleas emerge, they put their large hind legs to work and seek a host. Cat fleas can jump more than 12 inches — vertically and horizontally. When a host is found, fleas start feeding within minutes and mate within two hours. Within 34 hours of their first blood meal, female fleas begin laying eggs.4
Cat fleas may take 10 to 15 meals per day, with females consuming up to 15 times their weight in blood daily. They lay up to 2,000 eggs at a rate of 25 to 40 eggs per day.3,4 The eggs fall freely from the host, staying wherever they fall. From egg to adult generally takes 21 to 28 days. With just a few fleas, populations can skyrocket as hundreds hatch daily and the cycle repeats for generations.4
Ticks and fleas are much more than nuisances. Ticks can transmit serious diseases to humans and pets, from Lyme disease to tick-induced paralysis.1 Fleas are best known for bites and allergic reactions, but cat fleas transmit diseases to cats, dogs and humans, from cat scratch fever to murine typhus. They can also pass a type of dog tapeworm larvae to children who inadvertently ingest fleas.3,4 Protecting your home's perimeter is a key to prevention.
Human flea bites often occur at ankle level.
Amdro offers highly effective pest control products that kill and control outdoor ticks and fleas before they make their way indoors:
Preventive tick and flea medications help keep pets comfortable and pest-free.
When using these or other pesticides, always keep areas free from people and pets. Follow all label instructions closely. Never use lawn and landscape products to treat your pet or other animals. Your local veterinarian can recommend effective flea and tick control products and pet care practices that help put an end to tick and flea cycles, indoors and out.
By proactively treating your lawn and home perimeter for ticks and fleas, you can stop these pests in their tracks and prevent ongoing problems. With premium flea and tick controls and expert pest advice, Amdro is committed to helping you protect your home, lawn and family against ticks, fleas and other disruptive pests.
1. Stafford, K.C., “Tick Management Handbook," The Connecticut Agricultural Experiment Station, 2007.
2. Lord, C.C., “Brown Dog Tick," University of Florida IFAS, July 2014.
3. Purdue Medical Entomology, “Fleas," Purdue University.
4. Dryden, M.W., Payne, P. and Zurek, L., “Fleas Infesting Pets & Homes," Kansas State University, September 2003.