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Top-Rated Pest control specialists in Olney - Updated Nov 2026

Avatar for Terminix® Pest Control
Terminix® Pest Control
3.9(
1,074
)
Pest Control - Bugs and InsectsPest Control - RodentsPest Control - Termite+6 more

Serving Olney, IL and surrounding areas

Approved

In business since 1927

Free estimates

Warranties offered

"Very knowledgeable guy who seem to know what he’s doing. Don’t know results of spraying. Have had much rain since. Will have to see if it worked. Terminex will spray again the beginning of next month."
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58 neighbors recently requested a quote
Recommended by81%of homeowners
Pest Control FAQs, answered by experts

Yes, in some cases if your damper is left open, animals can come down your chimney. In these instances, it’s more likely that they have fallen in while looking for a safe spot rather than entered your house intentionally. Leaving your damper closed or installing a chimney cap can prevent animals from coming inside.

Raccoons are primarily crepuscular and nocturnal, meaning they are most active at dawn, dusk, and throughout the night. While less common, they may come out during the day to find food, especially in warm months or during the spring birthing season (April and May) when caring for their young. Seasonally, raccoons are active year-round and do not truly hibernate. However, during periods of severe cold, they will often remain in their dens for extended periods.

The main reason wolf spiders gravitate towards houses is the presence of their prey, including insects like flies and ants. Their attraction is also heightened by the availability of suitable shelter in areas cluttered or undisturbed and in moisture-rich environments like basements. Openings and gaps in the structure provide an easy access point for these spiders. During cold weather, wolf spiders may also seek warmth indoors, making your home an attractive refuge during harsh weather conditions.

Regular cleaning, sealing cracks, and inspecting second-hand furniture help prevent infestations.

You’ll find groundhogs are most active during the morning hours and late afternoon, but they want to avoid humans at all costs. If you do set a trap, you can set it out the night before so it’s waiting on them the next morning, and try to remove any human scent when setting it out.

The Olney, IL homeowners’ guide to pest control services

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