President
Brad Lee
 I started in Pest Control in 2008 with Arrow Exterminators and spent 15 years there as an operations manager. In 2023 I accepted the General Manager position at Dandi Guaranty Pest Solutions. We serve Tulsa Metro, Southeast Oklahoma, and Oklahoma City. I have spent time as the Vice SPAR for Oklahoma and been active in Legislative days advocating for our industry. I enjoy being able to help our industry in any way possible and continue to look for new ways to do so. I have been married to my wife Samantha now for 20 years and have two wonderful children Gracie & Gage.
president@ok-pma.com
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Vice President Eastern Chapter
Joel Derington
 Joel Derington is a Board Certified Entomologist and Owner of Pest Medic. Joel also owns a Marketing company in the Medical and Public Health field. Joel spent his early career as a pest control employee, business owner, technical services entomologist, and technical sales representative for such companies as ABC Pest Control, Waste Management, Terminix, and Ciba/ Novartis Animal Health.The recent years have been spent in sales in the medical field. He is enjoying being back in the pest management realm as a Pest management company owner, and consulting technical adviser and Dealer Relationship Manager for Remington Solar's Mosquito and insect misting systems. Joel lives in Tulsa, OK.
easternvp@ok-pma.com
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Vice President Western Chapter
Robert Freeman
 Robert has been in the pest control industry for over 20 years. He has held job titles as Sentricon techinin, pest control operator, Salesman and is currently the Operations Manager in Oklahoma City. He enjoys, fishing, shooting and spending time with family.
westernvp@ok-pma.com
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State Policy Affairs Representative
Public Affairs Chair • Policy Affairs Chair
Dallas Whitt
 I started in the pest control industry at 18 and have spent over two decades honing my skills across a wide range of environments, including military installations, hospitality, and healthcare. In 2023, I founded Critical Hit Pest Management, driven by a commitment to delivering personalized, safe, and effective pest solutions across Oklahoma. We serve both residential and commercial clients with a customer-first approach. I'm proud to serve on the OPMA board and look forward to continuing to give back to the industry that has shaped my career.
publicaffairs@ok-pma.com
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Secretary/Treasurer
Eileen Imwalle
 I have been in the pest control industry since 1982. 1982-1987 sales and service coordinator for Parker Pest Control, Inc. 1987-1994 inside and outside sales for Univar USA (Van Waters & Rogers). 1994-2009 worked with my husband in our business, Old Time Pest Control, Inc. 2009-2012 office manager for West Termite & Pest 2012-2015 office manager for Oklahoma Pest Solutions. 2012 to current OPMA Secretary. 2011-2012 Tulsa Metro Chamber representative.1998-2017 Volunteered through my church with Family and Children's Services of Tulsa providing weekly food deliveries along with holiday meals and adopting families for the Christmas season. I have been married to Dave for 40 years and have 2 wonderful daughters.
secretary@ok-pma.com
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