Pests to Watch for in the Spring & Summer 2026

Spring and summer are some of the best times of year, but they're also prime time for pests. As temperatures climb and outdoor activity picks up, so does activity from some of the most common and potentially harmful pests around the home. Whether it's ants marching through the kitchen, mosquitoes ruining a backyard gathering, or termites damaging your home's structure, the warmer months bring many different pests.

If you want to stay one step ahead this season, knowing which common spring and summer 2026 pests to look out for, and why they show up in the first place, is a great place to start.

Why Warmer Weather Means More Pests

Pest activity often follows the weather. Warmer temperatures, increased moisture, and longer days create the ideal breeding and foraging conditions for many cold-blooded insects and arachnids. Understanding this seasonal rhythm is key because the sooner you take preventive steps, the better your chances of avoiding a full-blown infestation.

Spring & Summer 2026 Pests to Look Out for This Season

Ants: As temperatures warm up in the spring, ants become more active and often find their way indoors in search of food and moisture. There are more than 700 ant species found in the U.S., about 25 of which commonly invade homes, and colonies can include hundreds of thousands of individuals. Certain species like carpenter ants or red imported fire ants can cause structural damage to your home or pose health risks.

Flies: Flies become noticeably more active in warm weather as heat accelerates their activity and breeding cycle. There are many species commonly found around homes, including house flies and fruit flies, each attracted to different food and waste sources. While often dismissed as a nuisance, flies can contaminate food and surfaces by spreading bacteria on their feet and bodies. Therefore, proper sanitation and intact window and door screens become essential defenses during the warmer months.

Mosquitoes: Mosquitoes thrive in the heat and humidity of summer, with warm temperatures speeding up their development and breeding cycle. Mosquitoes can lay eggs in as little as a half inch of standing water, meaning clogged gutters, birdbaths and overturned flowerpots around your home can all become breeding grounds. Beyond the itchy bites, mosquitoes are vectors of serious diseases including West Nile virus, dengue and Zika, making personal protection like EPA-registered repellents an important part of any summer routine.

Stinging Insects: Spring is when stinging insects emerge from overwintering and begin building new nests. Many times, colony growth is already quietly underway well before people notice. Wasps, yellowjackets and hornets are all common in and around residential properties, typically nesting in eaves, under decks, in wall voids and other sheltered spots. Stinging insects send more than 500,000 people to the emergency room every year, proving early nest detection and professional removal an important part of spring and summer home maintenance.

Termites: Warming spring temperatures and increased soil moisture trigger termites to emerge and establish new colonies. Termites, known as "silent destroyers," can chew through wood, flooring and even wallpaper completely undetected. The risks to your home are significant: termites cause more than $6.8 billion in property damage each year, and that damage is typically not covered by standard homeowners insurance.

Ticks: Ticks are arachnids, not insects, and become active in early spring as soon as temperatures rise. They pose a serious health concern because tick bites can transmit illnesses including Lyme disease and Rocky Mountain spotted fever, so checking yourself, family members and pets thoroughly after time outdoors is essential.

Check out NPMA’s Spring & Summer 2026 Bug Barometer® for more information about the pests predicted to affect your region.

Prevention Tips to Get Ahead of the Season

Get ahead of common spring and summer 2026 pests with the following tips

• Seal entry points: Inspect your home's exterior for cracks and gaps around windows, doors, utility pipes and foundations. Seal openings with caulk or weatherstripping.
• Eliminate standing water: Regularly empty birdbaths, gutters, flowerpots and other containers around your property.
• Maintain your yard: Keep grass trimmed and shrubs pruned away from the home's exterior. Remove leaf litter and debris where pests can hide.
• Store food properly: Keep food in airtight containers and clean up crumbs and spills right away.
• Fix moisture issues: Repair leaky pipes and clogged drains. Make sure basements, attics, and crawl spaces are properly ventilated.
• Schedule a professional inspection: A qualified pest control professional can identify vulnerabilities before they become full-blown infestations. Find a service professional using our zip code locator.