Top 10 Pest Problems Found in American Homes

According to the National Pest Management Association (NPMA), 84% of American homeowners have dealt with a pest problem in the past year. Pests cause billions of dollars in property damage, trigger health crises, and create enormous stress for families. Understanding the most common threats is the first step to protecting your home.

#1 — Termites

Termites are the undisputed champions of property destruction in America. The EPA estimates termites cause more than $5 billion in property damage annually — more than fires and floods combined for most homeowners. Subterranean termites, the most common species in the US, build colonies underground and travel through mud tubes to attack wooden structures from below.

Warning signs: Mud tubes on foundation walls, discarded wings near windows (after swarm season), hollow-sounding wood, and frass (small pellet-like droppings).

Action: Annual termite inspections are essential in high-risk states (southeastern US, California, Texas). See our Termite Control guide and Signs of Termite Damage.

#2 — Rodents (Mice & Rats)

Mice and rats are a year-round problem in every US state, with infestations surging in fall as temperatures drop and rodents seek warmth inside homes. Beyond the "yuck" factor, rodents chew through electrical wiring — a leading cause of house fires — contaminate food with droppings, and spread serious diseases.

The CDC identifies hantavirus pulmonary syndrome (spread by deer mice droppings), salmonellosis, and leptospirosis as rodent-borne health risks. Do not handle droppings without protective gear.

Action: Professional rodent control combines trapping, baiting, and exclusion to permanently seal entry points. Also see our Winter Rodent Control guide.

#3 — Cockroaches

Cockroaches are among the most adaptable and resilient creatures on Earth — which makes them particularly difficult to eliminate. The German cockroach is the most problematic indoor species, infesting kitchens, bathrooms, and any area with food and moisture. American cockroaches ("palmetto bugs") are common in southern states.

The CDC documents that cockroach allergens are a significant trigger for asthma attacks in children. Studies show that children in cockroach-infested homes have higher rates of asthma hospitalizations. Cockroaches also spread bacteria including Salmonella and E. coli.

Action: Professional cockroach treatment using gel baits, insect growth regulators, and crack/crevice applications is far more effective than consumer sprays, which often scatter cockroaches and worsen infestations.

#4 — Ants

Ants are the #1 nuisance pest complaint across America. More than 700 species of ants live in the United States, but a handful cause the majority of homeowner headaches: carpenter ants (structural damage), fire ants (painful stings, outdoor colonies), Argentine ants (massive supercolonies), odorous house ants (kitchen invasions), and pavement ants.

Carpenter ants deserve special attention — they excavate galleries in wood to build nests, causing structural damage that can rival termites in severity if left untreated. Unlike termites, carpenter ants do not eat wood; they hollow it out.

Action: For persistent ant problems, see our Ant Control guide and How to Get Rid of Ants Naturally.

#5 — Bed Bugs

Bed bugs re-emerged as a major pest problem in the late 1990s after decades of near-eradication and have spread to all 50 states. They are expert hitchhikers, traveling on luggage, clothing, and used furniture. Bed bugs do not transmit diseases but cause significant psychological distress, skin reactions, and secondary infections from scratching.

Key facts: Bed bugs can survive up to 12 months without feeding. A single fertilized female can produce hundreds of offspring. They are nearly impossible to eliminate without professional heat treatment or chemical programs.

Action: See our Bed Bug Treatment guide and Bed Bug Prevention tips. If you've recently traveled or bought used furniture and are waking up with bites, call (844) 578-2437 immediately.

#6 — Mosquitoes

Mosquitoes are the deadliest animals on Earth globally, responsible for more human deaths than any other creature. In the United States, they transmit West Nile virus (reported in all lower 48 states), eastern equine encephalitis, and in southern states, dengue and Zika virus. The Aedes albopictus (Asian tiger mosquito) has expanded its range northward significantly in recent years.

Beyond disease risk, mosquitoes make outdoor living miserable for American families during summer months.

Action: Professional mosquito barrier spray programs treat your yard every 3–4 weeks during mosquito season, reducing populations by 70–90%. Eliminate standing water sources on your property as a first step.

#7 — Spiders

Most spiders are harmless and actually beneficial (they prey on other insects), but two species in the United States pose genuine medical risks: the black widow (found in all lower 48 states) and the brown recluse (found primarily in the Midwest and South). Black widow bites can cause severe pain and muscle cramps. Brown recluse bites can cause necrotic skin lesions.

Action: Reduce clutter in garages, basements, and attics where spiders shelter. Seal exterior cracks. For active infestations, see our Spider Control guide.

#8 — Wildlife (Raccoons, Squirrels, Opossums)

Wildlife intrusions are an increasingly common problem as development encroaches on natural habitats. Raccoons, squirrels, opossums, skunks, and bats regularly enter attics, crawl spaces, and walls. They cause structural damage, spread parasites, leave disease-carrying droppings, and can be dangerous when cornered.

Action: Wildlife removal requires specialized skills and, in many states, specific licensing. See our Wildlife Removal guide. Never attempt to remove bats yourself — they may carry rabies.

#9 — Fleas & Ticks

Fleas and ticks are brought into homes primarily by pets and wildlife. Fleas cause intense itching and can spread cat scratch disease and, historically, plague (still present in the western US in small rodent populations). Ticks are among the most medically significant pests in America — the CDC tracks over a dozen tick-borne diseases, with Lyme disease being the most prevalent (400,000+ cases per year estimated).

Action: Year-round flea and tick prevention for pets is essential. For home infestations, see our Flea and Tick Control guide.

#10 — Wasps & Stinging Insects

Yellow jackets, paper wasps, bald-faced hornets, and mud daubers are common stinging insects that nest in and around homes. Stings are painful for most people and potentially life-threatening for the estimated 1–2 million Americans with venom allergies. Yellow jackets are particularly aggressive when nests are disturbed in late summer.

Action: Never approach an active wasp nest. Professional wasp nest removal ensures safe elimination. Seal eaves and overhangs in spring to prevent nest-building.

Prevention: Your Best Defense

The most effective pest control strategy is prevention. Here are universal steps every homeowner should take:

• Seal cracks and gaps in the foundation, walls, and around pipes (entry points for rodents and insects)
• Keep gutters clean and eliminate standing water (mosquito breeding)
• Store firewood away from the house and off the ground (termites and rodents)
• Keep food sealed and counters clean (cockroaches, ants, rodents)
• Schedule annual pest inspections — especially for termites in high-risk areas
• Inspect luggage and clothing after travel (bed bugs)

For a season-by-season prevention plan, see our Seasonal Pest Control Checklist.