Estherville, Iowa Pest Guide

Updated 2026-10-22 · By Kasey, Waukee, Iowa

• Emmet County
• Western Iowa
• 1 listed company
• 12 sources

Estherville is the county seat of Emmet County, and its population was 5,904 in the 2020 census. It is home to the main campus of Iowa Lakes Community College. In 1879 a 455-pound meteorite fell a few miles north of town, and pieces of the Estherville Meteorite are on display in the Estherville Public Library.

This page pulls together the pest issues Estherville homeowners tend to run into, local places to get help, and how to check that a pest company holds a current Iowa license.

Seasonal pests around Estherville

ISU Extension's seasonal guidance applies statewide, including Estherville:

1. April-June: ant hills. Soil-nesting ants are most active in wet spring weather. Flattening mounds is usually enough. Ants in Iowa.
2. July-September: yellowjackets. Colonies peak around State Fair time with up to roughly 5,000 workers per nest, according to ISU. Wasp nest removal.
3. September-October: boxelder bugs, lady beetles and stink bugs. These accidental invaders gather on sunny walls and slip into gaps. ISU recommends sealing openings.
4. October onward: mice. Native mice move indoors for winter. Mice in your Iowa home this fall.

Bed bugs aren't seasonal. If you suspect them, start with our bed bug guide.

Emerald ash borer in Emmet County

Emmet County does not appear on the state's 2022 list of confirmed emerald ash borer sites. It was the last Iowa county to have the beetle confirmed: in October 2024 IDALS announced a positive sample from a declining ash tree in Armstrong, and said that with Emmet County confirmed, no Iowa county remained without a detection. Estherville-area ash trees should be treated as at risk. IDALS says an infested tree is typically killed within two to four years. Signs include canopy thinning, leafy sprouts from the trunk, S-shaped galleries under the bark, bark splitting, woodpecker damage and 1/8-inch D-shaped exit holes. If you own ash trees, talk with a qualified tree care professional.

Local help in Estherville

• County Extension office: ISU Extension and Outreach Emmet County lists its office at 26 South 17th St., Estherville, IA 51334 (phone 712-362-3434). Extension offices are a good first stop for research-based yard, garden and pest information.
• Insect identification: the ISU Plant and Insect Diagnostic Clinic in Ames identifies insects mailed in by Iowans. Check its page for current forms and fees.
• Ticks: ISU's Medical Entomology Laboratory offers a free tick identification service by mail. It identifies the tick but does not test it for disease.
• Mosquitoes: the same ISU lab has run Iowa's mosquito surveillance program for about 50 years with state health partners, monitoring West Nile virus and mosquito numbers. Current data is on the Iowa Mosquito Surveillance website linked from its page.

Guides for Estherville homeowners

• Ant Exterminator Near Waukee: What to Expect and How to Choose a Pro
• Bed Bug Signs and What to Do in the Des Moines Metro
• Boxelder Bugs in Iowa Homes
• How to Get Rid of Ants in Iowa
• Mice in Your Iowa Home This Fall
• Wasp Nest Removal Near Waukee, Iowa

How to check a pest company's license in Estherville

Iowa requires anyone in the business of applying pesticides to another person's property to be licensed and certified by the state. To check a company:

1. Open the IDALS license lookup and choose Search By Company/License.
2. Type part of the company's name, or pick the county EMMET - 32 to see every company registered there.
3. Check that the expiration date is in the future. Expiration dates in the lookup fall on December 31.

When we searched Emmet County on 10/22/2026, the lookup returned 47 company records. That count includes every license type (lawn care, agriculture, golf courses and pest control) and some expired records, so narrow it down by name. A company is listed under the county of its own address, so a company that serves Estherville may be listed under a neighboring county. Our guide on choosing a licensed pest pro has a checklist of questions to ask.

Frequently asked questions

What county is Estherville in?

Estherville is in Emmet County, Iowa. The county matters for two things: which ISU Extension office is closest, and which county to choose in the IDALS license lookup.

Has emerald ash borer reached Estherville?

Emmet County was the last of Iowa's 99 counties to have EAB confirmed, in October 2024, from a sample collected in Armstrong.

How do I know a pest company in Estherville is licensed?

Search the company's name in the IDALS lookup and check that the expiration date hasn't passed. A company saying it's licensed is not the same as a current state record.

Was Emmet County really the last Iowa county to get emerald ash borer?

Yes. In October 2024 IDALS announced that a sample from a declining ash tree in Armstrong had been confirmed, and that with positive confirmation in Emmet County there were no remaining Iowa counties without a detection.