Quick answer
Most pests get in the same few ways. Close those and you’ll see far fewer bugs in every season:
- Seal the gaps: door sweeps, window screens, and caulk around pipes, wires and vents.
- Remove water: fix leaks, clean gutters, and run a dehumidifier in the basement.
- Remove food: sealed containers, lidded trash, no pet food left out overnight.
- Keep a dry, clear border: pull mulch, plants and firewood away from the foundation.
- Check the house each spring and fall — that’s when most pests move in.
If you’re dealing with pests every season, a quarterly protection plan is usually cheaper than treating each problem separately.
What Shows Up in Chicagoland Homes Each Season
Pests follow the weather. Here’s what to expect through the year and what to do before it starts:
| Season | What shows up | What to do |
|---|---|---|
| Spring Mar–May | Ants, carpenter bees, spiders becoming active, wasp queens starting nests | Seal gaps, fix moisture from snowmelt, check eaves for small nests, bait ant trails |
| Summer Jun–Aug | Yellow jackets and hornets (nests growing), ants, mosquitoes, spiders | Remove standing water, keep trash lidded, check decks and play sets for nests |
| Fall Sep–Nov | Mice, spiders, boxelder bugs, stink bugs, Asian lady beetles | Seal cracks on sunny south and west walls, install door sweeps, replace garage seals, move firewood away |
| Winter Dec–Feb | Mice, cockroaches, overwintering bugs on warm days, carpenter ants indoors | Check attic and basement for droppings; carpenter ants indoors in winter can mean a nest inside |
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Do You Need a Pest Protection Plan?
Not every home needs ongoing service. Tick everything that applies to yours:
30-second plan check
Why Chicagoland Homes Get So Many Pests
- Big seasonal swings. Cold falls push insects and rodents indoors to overwinter; warm springs bring them out and send colonies looking for food.
- Wet springs and humid summers. Moisture around foundations and in basements attracts ants, spiders, centipedes and the insects they eat.
- Woods, fields and water nearby. Many suburbs border forest preserves, farm fields, ponds and creeks, which means more pests at the edge of the yard.
- Settling homes. Gaps open over time around foundations, sills, windows and utility lines — easy ways in.
The 6 Things That Keep Most Pests Out
These steps help with almost every pest at once — insects and rodents alike.
Seal Entry Points
Install door sweeps, repair window and vent screens, and caulk gaps around pipes, wires, outlets on exterior walls, and where siding meets the foundation.
Fix Moisture
Repair leaks, clean gutters, point downspouts away from the house, and run a dehumidifier in the basement.
Control Food and Trash
Store pantry food, pet food and birdseed in sealed containers, keep trash lidded, and don’t leave dishes or pet bowls out overnight.
Create a Dry Border
Keep a strip next to the foundation free of thick mulch and dense plants, and stack firewood off the ground and away from the house.
Rethink Outdoor Lighting
Yellow “bug light” or warm LED bulbs attract fewer insects — and fewer insects means fewer spiders.
Inspect Each Season
Walk around the house each spring and fall. Look for new gaps, small wasp nests, droppings, ant trails and damp wood.
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What Not to Do
- Setting off bug bombs. They don’t reach the cracks where pests live and leave residue on surfaces.
- Stacking firewood against the house. It shelters mice, spiders, ants and termites right next to your walls.
- Leaving the garage door open in the evening. It’s one of the easiest ways for mice and insects to get in.
- Spraying insecticide all over the inside. Targeted treatments at entry points work better and expose your family to far less.
- Ignoring small signs. A few droppings or one ant trail is much easier to handle than an established infestation.
Pest-by-Pest Guides
Already dealing with a specific pest? Our step-by-step guides cover identification, DIY options and when to call a pro:
DIY vs. Professional: What It Costs in Chicagoland
Most prevention costs little more than caulk, door sweeps and a dehumidifier. Professional service makes sense when pests keep coming back or you’re dealing with more than one.
EcoWall: a one-time treatment from $219 (30-day re-treatment guarantee), or Quarterly Protection from $49/month — four treatments a year, free re-visits between appointments and a 90-day satisfaction guarantee. Exact price is confirmed on-site before work begins — see what’s included.
What a Quarterly Plan Includes
- Four seasonal treatments timed for spring, summer, fall and winter pest pressure.
- Exterior barrier around the foundation, doors, windows and eaves, with interior treatment as needed.
- De-webbing and nest checks at eaves and entry points.
- Free re-visits between scheduled treatments if pests show up.
Seasonal Pest-Proofing Checklist
- Spring: caulk new gaps and check eaves for small nests
- Spring: clean gutters and fix moisture from snowmelt
- Summer: empty standing water weekly
- Summer: keep trash and recycling lids closed
- Fall: install or replace door sweeps and garage seals
- Fall: seal cracks on sunny south and west walls
- Winter: check the attic and basement for droppings
- Year-round: keep firewood and mulch away from the foundation
Pest Prevention FAQ
When is the best time of year for pest control in Chicagoland?
Spring and fall matter most. Spring treatment stops ants, wasps and other insects as colonies wake up; fall treatment and sealing keep mice, spiders and overwintering bugs out before cold weather. Quarterly plans cover both, plus summer and winter.
Is quarterly pest control worth it?
It usually is if you deal with more than one kind of pest or the same problem keeps coming back each season. If you only see an occasional pest, prevention and a one-time treatment may be all you need.
What are the bugs on my sunny walls in the fall?
Usually boxelder bugs, brown marmorated stink bugs or Asian lady beetles. They gather on warm south- and west-facing walls looking for a place to spend the winter. They’re mostly harmless — seal cracks before they arrive, and vacuum up any that get inside.
Why do I see bugs in my house in winter?
Overwintering insects that slipped in during fall can become active on warm days, and mice and cockroaches stay active indoors all winter. Carpenter ants seen indoors in winter can mean a nest inside the heated part of the house.
Are pest control treatments safe for kids and pets?
We use EPA-registered products applied according to the label, focused on cracks, crevices and the exterior. Kids and pets can return to treated areas once products have dried, usually about 30 minutes; your technician will explain any specific precautions.
How much does a quarterly pest plan cost?
At EcoWall Pest Control, Quarterly Protection starts at $49/month, and a one-time treatment starts at $219. The exact price is confirmed on-site before any work begins.
General Pest Plans Near You
More homeowner guides: German cockroaches, mice, ants, spiders, wasp nests, carpenter bees.