Why Wil-Kil?

Logo and Employee Images

Delivering Quality Pest Control Services Since 1924

Wil-Kil Pest Control was founded in Milwaukee, Wisconsin in 1924. Wil-Kil’s founder, and original owner, was Henry Turrie. Mr. Turrie’s vision was to have Wil-Kil Pest Control earn the reputation of being the quality leader in the pest control industry. In striving toward that goal, he employed the simple philosophy of providing 100 percent customer satisfaction. Since then, Wil-Kil Pest Control has become the quality leader in pest control in the Midwest.

Our specialties lie in both residential and commercial pest control. We serve a wide range of industries including healthcare, manufacturing, and warehousing.


Wil-Kil Pest Control has earned the reputation of being the upper Midwest’s quality leader in pest management. As Copesan’s Quality Partner of Year for three years running, we utilize the latest technologies and techniques of Integrated Pest Management (IPM) while delivering customized programs with personalized service.

Wil-Kil Pest Control services Wisconsin, Minnesota, Northern Illinois, Northeast Iowa and the Upper Peninsula of Michigan. Wil-Kil is headquartered in Sun Prairie, WI, with branch offices in Appleton, WI, Eau Claire, WI, Menomonee Falls, WI, and Sun Prairie, WI.

Technical Expertise

Our employees at Wil-Kil work with us for an average of nine years. Members of our management team have an average of sixteen years of pest management experience. Our employee retention rate is unsurpassed in our industry, which allows us to provide our customers with the highest degree of quality service through highly trained and experienced service specialists.

  • Associate Certified Entomologists (ACE): Wil-Kil employs over twenty ACE’s, more than any other regional pest management company in the Midwest – perhaps only one of a handful of pest management companies nationwide with this type of acclaim.
  • Board Certified Entomologists (BCE): Wil-Kil employs two BCE’s. As of 2019, there were only eight BCE’s in the state of Wisconsin.
  • Industry Leaders: Wil-Kil Pest Control is an active participant in the Wisconsin Pest Control Association (WPCA), Minnesota Pest Management Association, and the National Pest Management Association (NPMA). Various members of the Wil-Kil management team are serving or have served our local industry associations as presidents and board members.

As a Wil-Kil Pest Control client, you have access to the resources of our parent company, Copesan. Copesan is a national provider of pest management services. Combined, this partner network boasts a team of more than 100 technical experts, many of whom hold advanced degrees in entomology, biology, and other pest-related disciplines and apply their expertise at the local level. Some are even internationally recognized in the pest management industry and are leaders in:

  • Research
  • Training
  • Education
  • Advancements in strategies for service delivery
  • Defining pest management for the future

Integrated Pest Management (IPM)

IPM is an effective pest management approach which integrates many treatment tactics into a logical program to provide long-term solutions to pest problems – all while keeping the environment in mind. An IPM approach is not just dependent on one or two tactics to solve a pest management problem, but relies on the interactions of the many components to form a complete program. Some components of IPM include:

  • Education
  • Inspection
  • Pest exclusion
  • Pest trapping
  • Sanitation
  • Physical control
  • Pesticide applications
  • Mechanical control
  • Quality control
  • Documentation


Wil-Kil is a wholly-owned subsidiary of Copesan Services, Inc. Copesan is an alliance of premier pest management companies that are united as a single entity for the sole purpose of providing quality pest solutions to businesses with locations throughout North America. Wil-Kil Pest Control is an operating company of Copesan and provides service to its national customers throughout Wisconsin and surrounding areas. 


At Wil-Kil, we are affiliated with many local and national organizations. We are proud to have an A+ rating from the Better Business Bureau. See our list of professional affiliations and memberships below:

Bed Bug Central
Bed Bug Free
Better Business Bureau
Greater Chicago Pest Management Alliance (GCPMA)
Institute of Real Estate Management (IREM)
J&K Canine Academy
Midwest Food Processing Association (MWFPA)
Minnesota Pest Management Association
National Entomology Scent Detection Canine Association (NESDCA)
National Pest Management Association (NPMA)
National Pest Management Association Green Pro
National Pest Management Association Quality Pro 
Thermal Remediation From Temp Air
Wisconsin Hotel and Lodging Association (WHLA)
Wisconsin Pest Control Association (WPCA)