Expect more roaches, ticks and mosquitoes in IL this summer. Here’s what to do

Illinois homeowners should brace for an increase in fly and tick activity due to hot conditions this summer, according to a recent National Pest Management Association forecast. Any heavy rainfall could also increase ant and cockroach invasions inside homes, as well.

Mosquitoes carrying West Nile virus and rodents linked to hantavirus also pose health risks across the state.

FULL STORY: Expect more of these pests this summer in Illinois (+ how to stay protected)

Here are key takeaways:

• The NPMA’s Spring & Summer 2026 Bug Barometer predicts summer heat will boost fly and tick populations, while rainy conditions will drive spikes in ants and cockroaches in Illinois homes.
• Jim Fredericks, a board-certified entomologist and senior vice president of public affairs at NPMA, said ants and cockroaches are two pests Illinois homeowners “should definitely be on the lookout for.”
• Illinois has reported the sixth-greatest number of West Nile virus cases in the U.S. over the past 25 years. Symptoms can include fever, headaches and nausea, and the virus can be fatal in rare cases.
• IDPH Director Dr. Sameer Vohra urged residents to wear bug repellent and vaccinate pets against rabies, noting some biting pests and animals can carry diseases that cause serious human illnesses.
• To mitigate contact with rodents that can carry hantavirus, Fredericks recommends sealing holes, storing food in airtight containers and reducing clutter. Mice can fit through openings as small as a dime.

The summary points above were compiled with the help of AI tools and edited by journalists. The full story in the link at top was reported, written and edited entirely by journalists.