Indoor Pests 101: Identify and Eliminate the 10 Most Common Invaders

There's nothing more disruptive than a pest invasion in your home. These unwelcome visitors not only disturb your peace but also introduce germs and ruin food supplies. If you're grappling with an infestation, take heart—indoor pests can quickly become a thing of the past.

We consulted entomology experts for insights on recognizing and managing the ten most prevalent indoor pests in the U.S. Along with identification tips, we'll share product recommendations to effectively eliminate fruit flies, cockroaches, rodents, and more, turning your space into a pest-free haven.

1. Ants

ants in kitchen on some terracotta colored tile with gray grouting

Ants are tiny, pesky intruders that can be tough to manage. In the U.S., about 30 ant species invade homes, with the Odorous House ant being the most widespread. They emit a strong odor when crushed and have multiple queens, making their colonies robust.

Ants are attracted to moisture and food sources. The Tawny Crazy Ant, which doesn't march in a straight line, prefers mealybugs and rotting fruit. Sugar Ants build noticeable dirt mounds and are drawn to sugary substances. Carpenter ants are the most destructive, nesting in wood and causing significant damage.

To tackle ant problems, start by identifying the species. Liquid ant baits are effective if placed outside where trails are visible. Products like TERRO Outdoor Liquid Ant Bait can efficiently kill ants outside without attracting them inside.

For carpenter ants, boric acid powder is effective, targeting their nervous system. Ensure you seal entry points and maintain a clean environment to prevent reinfestation.

2. Rodents

Rodents, including mice and rats, are highly destructive pests that can contaminate food and damage property. They enter through small openings and nest in dark areas. Sealing entry points and using traps are essential for control.

Electronic repellents emit sounds to deter rodents, while humane traps can catch and release them. If the infestation is severe, consider professional help.

3. Centipedes

Centipedes are identifiable by their elongated bodies and many legs. They thrive in cluttered, damp areas and are often found where there's an existing insect problem. Cleaning and reducing clutter can help eliminate them.

Using cleaning sprays and natural deterrents like Mighty Mint Insect Control can keep them at bay.

4. Flies

Flies are a common indoor nuisance, drawn to food and moisture. The housefly, fruit fly, and drain fly are the most prevalent. To reduce their presence, ensure garbage is secured, and regularly clean kitchen surfaces.

UV light traps and baited traps can help control fly populations. Keep entry points sealed to prevent them from getting inside.

5. Bed Bugs

Bed bugs are flat, oval, brown insects that feed on human blood, often hiding in mattresses and furniture. They can enter homes via used furniture or luggage from infested areas.

To eliminate them, encase mattresses, wash linens in hot water, and consider professional pest control for severe infestations.

6. Silverfish

Silverfish are small, shiny insects that thrive in humid conditions. They can damage paper and textiles. Reducing humidity and sealing entry points are crucial in preventing infestations.

7. Termites

Termites feed on wood, causing significant structural damage. Regular inspections and using borax powder can help manage them. Dispose of dead wood outside to prevent infestations.

8. Cockroaches

The German Cockroach is a common indoor pest, often found in warm areas. They can enter homes in bags or appliances. Over-the-counter sprays and baits can help control them.

9. Mosquitoes and Ticks

These pests spread diseases and thrive in warm weather. Use EPA-registered repellents and maintain your yard to eliminate standing water where they breed.

10. Spiders

Spiders enter homes seeking food and shelter. Keeping your home clean and sealing entry points can deter them. Essential oils can also be used to repel spiders naturally.