Man working in pest control is checking a facility for insects and other bugs, specifically cockroaches, by looking under the sofa with a flashlight. Worker conducting thorough pest inspection.


As the weather begins to warm, facilities will need to start warming up their pest control programs. Pest threats are a certainty, making preventative maintenance essential for safeguarding environments. In preparation for the upcoming season, the Professional Pest Management Alliance (NPMA) released its Spring & Summer 2026 Bug Barometer.

Analyzing weather patterns, climate data, and pest biology, NPMA’s Bug Barometer provides region-specific pest predictions. Overall, this year’s winter weather provided an ideal breeding ground that may cause a surge of pests emerging earlier.

Below are the types of critters buildings should safeguard against in spring and summer by region.

Mid-Atlantic and New England: In spring, be on the lookout for termites, brown marmorated stink bugs, and Asian lady beetles. In summer, expect ticks and stinging insects.

Southeast: Spring will see termite, mosquito, and ant activity. In summer, facilities may see an increase in flies and cockroaches.

Great Lakes, Ohio Valley, and Midwest: Spring and summer forecasts show fly, tick, ant, and cockroach invasions—the latter two pests appearing indoors following rainfall.

North Central: Spring weather predicts tick, fly, and cockroach activity. Around mid-summer, yellowjackets and wasps will emerge.

South Central: Spring weather is ideal for termites, ticks, mosquitoes, with the summer weather bringing in swarms of flies.

Intermountain and Southwest: Throughout both seasons, commercial cleaning executives can anticipate cockroaches, flies, scorpions, and spiders.

Northwest: Mild spring conditions welcome ants, stinging insects, cockroaches, and rodents. In summer, mosquitoes, flies, yellowjackets, and ants will join the fray.

Learn about strategic, proactive approaches to pest control management and view NPMA's interactive bug barometer for a closer look at region-specific pest data.