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Top-Rated Pest control specialists in Monmouth - 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 Monmouth, 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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+2

58 neighbors recently requested a quote
Recommended by81%of homeowners
Avatar for TruGreen
TruGreen
3.7(
10
)
Mosquito Control

Serving Monmouth, IL and surrounding areas

Approved

In business since 1974

Free estimates

Credit card accepted

"TruGreen provided transparent pricing and quality workmanship when treating my property for bed bugs. Their technicians were professional and thorough, ensuring every area was treated to eliminate the infestation. I appreciated their attention to detail and how they followed up to ensure the problem was resolved. I'll definitely be using their services again if needed."
Recommended by100%of homeowners
Avatar for Presto-X (St. Louis)
Presto-X (St. Louis)
New to Angi
Mosquito ControlPest Control - Bed BugsPest Control - Birds and Bats+4 more

Serving Monmouth, IL and surrounding areas

Approved

In business since 1932

Free estimates

Warranties offered

Since 1932, Presto-X has been providing expert pest control services guided by the enduring principles of providing world class service to our customers and taking care of our colleagues. Presto-X covers your home or business with expert knowledge, professionally licensed and trained technicians, and exemplary service designed specifically for you.

Pest Control FAQs, answered by experts

It’s difficult to be sure bed bugs are gone, especially with DIY methods. Any treatment you use should also include dedicated beg bug traps to pick up stragglers and help you monitor how many are left. It usually takes around three weeks to clean up remaining bed bugs and make sure they aren’t returning any time soon. Hiring a bed bug exterminator can decrease the amount of time it takes to remove these pests.

Through thorough inspections and sealing of potential entry points to deter access.

A single bed bug bites multiple times throughout one night until full, but then takes a break for a week or so to digest. However, the more bugs present, the more likely you get bit every night. Tracking how often you get bit is a good way to approximate the size of the infestation.

Contact pest control if you have a stink bug infestation that you need to eliminate quickly. It’s difficult to kill them without crushing them and releasing their signature odor, or without using a toxic insecticide. Some homeowners have had luck with peppermint oil sprays or soapy water traps. But a professional exterminator will have the best advice and course of action.

One of the best ways to get rid of mice is to prevent them from showing up in the first place with smart tricks—like placing a deterrent around the foundation of your house. Try building a barrier of rocks to make it harder for such rodents to get cozy in the small corners and crawl spaces that might give them access to the interior.

The Monmouth, IL homeowners’ guide to pest control services

From average costs to expert advice, get all the answers you need to get your job done.