Pests That Thrive in High Summer Humidity and How to Avoid Them

 In General

When it comes to a love of humidity, humans and pests are on opposite ends of the spectrum. While we tend to despise air that is thick with heat and water vapor, most bugs actually thrive in it and need it to live. Unfortunately, this means that the impending summer humidity in certain parts of the country is about to bring these pests out in a big way.

Five of the Most Common Summer Pests

1. Cockroaches

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The German cockroach is the most common roach species infesting our homes in North America. They are attracted to warm commercial and residential environments close to food, making your kitchen and the water heater in the basement their most frequented hideaways. Adult German cockroaches are identified by the light brown to tan coloring with two dark, almost parallel stripes right on the back. When a German cockroach is present in a home, it’s possible to detect a mild, stale odor. 

2. Silverfish

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These small, wingless insects are nocturnal and need to keep their bodies moist at all times in order to survive. You are likely to find them beneath boxes or furniture in your basement, the shower, or hiding in your kitchen. Silverfish get their name from the insect’s silvery, metallic appearance and fish-like shape. They are found throughout the U.S. and are typically seen in moist, humid areas in the home, such as bathrooms, basements and attics.

3. Centipedes

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Carnivorous and nocturnal, with their 100 feet, these pests can move quickly and spend most of the day hiding in humid, secluded places. They are highly attracted to the moist, humid parts of the home because they need to rehydrate constantly in order to live. Centipedes are rarely seen by humans and most centipedes live for more than a year and some up to six years.

4. Earwigs

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Known to burrow into topsoil outside, these nocturnal bugs can also infiltrate dark and humid areas of your home. You are most likely to find them around floor drains, bathrooms, or under rugs or furniture.

5. Roly-Poly Bugs

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Also known as pill bugs, sow bugs, potato bugs, or armadillo bugs, these bugs often infest damp basements.

Tips to Prevent/Eliminate Summer Pests:

  • Control humidity
  • Invest in a dehumidifier
  • Eliminate sources of moisture
  • Fix Leaks
  • Dry out puddles
  • Replace old weatherstripping
  • Install vapor barriers
  • Inspect your home’s perimeter regularly
  • Repair cracks or holes
  • Store any organic waste away from outdoor walls



Pharo Heating & Cooling is a full-service HVAC contractor in Madison. Our team provides top quality service for new construction and replacement furnace and air conditioner needs. For more information about annual furnace inspection or concerns, give us a call at 608-849-5410 or submit a contact form through our website.

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