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September 02, 2025
Maine’s September Pest Forecast 2025
Labor Day marks the unofficial end of summer, but the warm weather often lingers a few more weeks in Maine. For homeowners in Portland, Augusta, Waterville, and communities throughout central and southern portions of the state, pests active in July and August aren’t going anywhere just yet.
With temperatures hovering around the seasonal average and rainfall expected to be near normal for September 2025, many pests will continue to thrive. From stinging insects to mosquitoes and ticks, Maine homeowners must stay vigilant to keep insects and rodents away from their families and homes.
Stinging Insects Are Still Active
As we mentioned in a recent post, When Are Wasps & Hornets Most Active in Maine, stinging insects become more aggressive as fall approaches. With food sources dwindling and nests at their peak, yellow jackets, paper wasps, and other stinging insects are “hangry” and more easily provoked.
If you’re mowing, weed whacking, or doing yard work, take extra care to avoid disturbing ground nests. Wasps also build nests on homes, bushes, and landscaping near areas where families spend time, so stay alert.
Tips for Avoiding Stings
- Avoid using bright clothing or floral scents in the yard.
- Keep food and drinks covered when outdoors.
- Inspect your property for nests and treat early.
Professional Stinging Insect Control
For effective wasp removal, Pine State Pest Solutions is here to assist Maine property owners. While one-time treatments are available, we recommend our Home Protection Plan for ongoing prevention and peace of mind.
Home Protection Plan
Starting as low as $35/month*
Pine State’s Home Protection is an affordable pest control plan that is ideal for homeowners who want general pest control services that target common house-infesting insects and rodents.
When you sign up for this ongoing service, you’ll receive an initial service visit to treat the existing pest problem and then seasonal service visits spread out over the year to ensure pests stay out. That’s a total of four services annually.
Pests covered under Pine State’s Home Protection plan include carpenter ants, cornfield ants, crazy ants, field ants, little black ants, pavement ants, carpet beetles, cigarette beetles, drugstore beetles, flour beetles, ground beetles, hide beetles, larder beetles, saw-toothed grain beetles, warehouse beetles, boxelder bugs, carpenter bees, centipedes, clover mites, American cockroaches, brown-banded cockroaches, wood cockroaches, field crickets, house crickets, European earwigs, firebrats, bald-faced hornets, European hornets, deer mice, house mice, millipedes, Angoumois grain moths, drain moths, Indian meal moths, Mediterranean flour moths, mud daubers, Norway rats, paper wasps, pill bugs, rice weevils, silverfish, sow bugs, springtails, cellar spiders, daddy longlegs spiders, house spiders, jumping spiders, sac spiders, wolf spiders, Western conifer seed bugs, and yellow jackets.
*Some exclusions apply- please see your agreement
Deer Ticks Remain a Concern
Deer ticks are a year-round concern, but September marks a transition: nymphs fed over summer are becoming adults. As cooler weather sets in, the risk of Lyme disease can rise again in many parts of Maine.
Preventing Tick Encounters
- Keep grass trimmed and leaves raked.
- Clear brush and woodpiles from the yard.
- Stay on paths when hiking.
Tick Control from Pine State
Pine State Pest Solutions offers seasonal tick treatments to reduce tick activity on your property. Seasonal programs usually start in May, but there’s still time to schedule a fall treatment to protect your family.
Mosquitoes Are Still Biting
Maine mosquitoes may not be as persistent as ticks, but they remain a nuisance and a potential health risk in September. While Zika isn’t a concern here, mosquitoes can carry Eastern Equine Encephalitis (EEE) and West Nile Virus (WNV).
Tips to Reduce Mosquito Activity
Mosquito activity generally continues until October or until temperatures consistently drop below 50°F. Avoid peak biting times (dawn and dusk), wear protective clothing, and drain standing water on your property.
Schedule Your Mosquito Treatment
Schedule mosquito treatments with Pine State Pest Solutions for the most effective control.
Near-Average September Means Other Pests Are Active
September also brings activity from other common pests:
- Ants: Carpenter ants and other species continue foraging as temperatures stay mild. Ants may move indoors seeking food and shelter.
- Spiders: Late summer and early fall is prime spider season. Many spider species start moving indoors, looking for food and warm, dry shelter. Check windows, doors, and basements.
- Rodents: Mice and rats begin seeking warmth as nights cool, even if temperatures remain near average. Sealing gaps and storing firewood away from the house can reduce indoor visits.
With so many pests active simultaneously, it’s easy for minor problems to turn into big ones. That’s why an ongoing home pest control plan from Pine State Pest Solutions is so valuable. Regular seasonal treatments help keep ants, spiders, rodents, and other pests out all year long, giving homeowners peace of mind no matter the weather.
Contact Pine State Pest Solutions To Get Started!
September may look like the start of fall, but for Maine pests, it’s still high season. Pine State Pest Solutions can help you manage stinging insects, ticks, mosquitoes, ants, spiders, rodents, and more, so you can enjoy the last weeks of warm weather without worry. Reach out today to get started!
This blog was originally published on September 7, 2021; it has been updated to reflect the most up-to-date information.
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