Lingruen Associates
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Lingruen Associates


About Us

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David Hoska

Lingruen Associates was founded in 1951 by Donald Lingruen. David Hoska joined the company in 1978 as a carpenter and then advanced to licensed inspector. In 1982, David took over the company and assumed the position of President-CEO of the corporation. David served as District Chairman of the Pest Control Operators Association of California.

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Gary Flowers
Vice-President -CFO

In 1997 Gary Flowers joined the company as Vice President-CFO. Gary brought years of valuable knowledge in the pest control industry and had extensive experience in construction. When not working or tending to family life you may find him at Sugar Bowl Ski Resort where he is a former member and past Director of the Resort's National Ski Patrol.

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Francisco Rigoberto (Rigo) Rangel
Vice-President -COO

Francisco (Rigo) Rangel started with Lingruen in 1990 and was promoted to general Foreman in 2000. Rigo became a Vice-President-COO in June of 2004. He is also a licensed General Contractor and Field Representative. Rigo is fluent in English and Spanish. When not at work you might find him at the local golf course.



Lingruen's carpenters are all union members of the Carpenters Local Union #2236. Our executive staff is active in the Pest Control Operators of California.