Every Pest Has a Season: What's Coming for Your Home This Spring and Summer
Spring is when pest control companies get busy, and there is a reason for that. Pests follow predictable seasonal patterns, and the ones showing up in your house in April are different from the ones you will deal with in August. Knowing what is coming helps you decide whether to act now or wait.
Here is a month-by-month breakdown of what to expect, what each pest costs to treat, and when it makes sense to call a professional versus handle it yourself.
March Through May: The First Wave
Spring is when colonies wake up. Ants send scouts indoors looking for food and water. Termites swarm. Spiders start showing up in corners and windowsills.
Ants are the first pest most homeowners notice in spring. A few scouts in the kitchen turn into a steady trail within days. For most ant species, a one-time treatment runs $150 to $300. Carpenter ants cost more because treatment requires locating and eliminating the nest inside the wood structure, typically $250 to $500. Fire ants are a yard problem rather than an indoor problem in most cases, and treating the whole yard costs $150 to $350.
Termites swarm in spring, and swarm season is when most homeowners discover they have a problem. Subterranean termites send out winged swarmers on warm days after rain, usually between March and May depending on your region. If you find wings on windowsills or see a swarm emerging from the ground near your foundation, you need a termite inspection before anything else. Treatment costs vary widely: a subterranean termite treatment runs $1,200 to $3,000 for a liquid barrier, and bait station systems run $1,500 to $3,500 installed.
Termite pressure varies by region. In the Southeast, termites are a year-round concern. Cities like Atlanta, Nashville, Jacksonville, and Charlotte all sit in heavy termite zones. Texas cities like Dallas, Houston, and San Antonio deal with subterranean termites year-round due to mild winters. Even Phoenix has subterranean termite pressure despite the desert climate.
If you are not sure whether you have termites, here are the signs to look for. And if you are wondering whether your homeowner's insurance covers the damage, the short answer is almost never.
May Through July: The Explosion
Summer is peak season for nearly everything.
Mosquitoes become the dominant outdoor pest from May through September in most of the country. A single yard treatment costs $100 to $350, but most homeowners in heavy mosquito areas sign up for monthly service during the season. A full-season plan runs $400 to $900. Mosquito misting systems are a permanent solution at $2,000 to $4,000 installed.
Mosquito pressure is heaviest in the South. Atlanta, Houston, Dallas, Orlando, Tampa, and Nashville all have long mosquito seasons. Even cities with drier climates like San Diego and Baton Rouge deal with mosquitoes near irrigated landscapes and standing water.
Cockroaches hit peak activity indoors during summer. German cockroaches (the small ones in kitchens) and American cockroaches (the large ones that come in from outside) are both at their worst from June through September. Treatment costs $100 to $400 depending on the species. German cockroaches are significantly harder and more expensive to treat than American cockroaches because they reproduce faster and live entirely inside the home. A German cockroach treatment program with follow-ups runs $200 to $500.
Cockroach pressure is heaviest in humid cities. Houston, Miami, New Orleans, New York, and Detroit all have persistent cockroach problems driven by climate and housing density.
Fleas become a problem in late spring and summer, especially in homes with pets. A professional flea treatment costs $150 to $400. Treatment requires follow-up in 2-3 weeks because flea pupae survive the initial treatment and hatch afterward.
Wasps and hornets build nests that reach maximum size by late summer. An accessible nest on an eave costs $100 to $200 to remove. Nests inside wall voids or high on the roofline run $200 to $400.
August Through October: Late Season
Bed bugs spike in late summer because of summer travel. Hotels, Airbnbs, and rental properties are the primary transmission points. Treatment costs $300 to $4,000 depending on the method. Heat treatment ($1,500-$3,500) is the most effective single-treatment option. Know the signs of bed bugs and what bed bug bites actually look like before you panic.
Spiders are most visible in fall because it is mating season. Males wander in search of females, which is why you suddenly see large spiders on walls and in doorways in September and October. Spider treatment is $100 to $300, but most spider problems resolve when you treat the insects they feed on. Spider pressure varies by region: Denver and Kansas City deal with brown recluse, while Louisville and Phoenix have their own species-specific challenges.
Rodents start moving indoors in fall as temperatures drop. Mice and rats enter through gaps as small as a quarter. A rodent exterminator costs $200 to $600, and the real cost is often in exclusion work (sealing entry points) rather than trapping. Cities with the heaviest rodent pressure include Chicago, New York, Los Angeles, Minneapolis, Denver, Seattle, and Philadelphia.
Should You Get a Plan or Call When You See Something?
If you live in the Southeast, Gulf Coast, or desert Southwest where pest pressure is year-round, a quarterly pest control plan is almost always more cost-effective than calling reactively. A quarterly plan runs $300 to $600/year and includes free callbacks between visits.
If you live in the Midwest or Northeast with distinct seasons, you may only need treatment in spring and fall. Whether professional pest control is worth the cost depends on your specific situation. Here is a detailed breakdown of when it makes sense.
For a quick estimate on what treatment would cost for your home, the pest control cost calculator gives you a ballpark in 30 seconds without asking for your email.