The County Agricultural Commissioner is charged with the responsibility of providing assistance and guidance from specially trained staff in the control of common pest that are detrimental to agriculture, the environment, or that are a threat to human health and safety. Such pests include plant diseases, noxious weeds, rodents, birds and other vertebrate pests causing damage. The Department sells, at cost, a variety of baits for the control of field rodents such as ground squirrels, rats and mice. The Department, in cooperation with USDA and CDFA also strives to implement effective biological control, when practical, on a variety of insect and weed pests. To date, the Calaveras County Department of Agriculture has introduced biological control organisms for Western Grapeleaf Skeletonizer, Ash Whitefly, Klamath Weed, Italian Thistle, Milk Thistle, Puncturevine, and Yellow Starthistle.
The Agricultural Commissioner also administers a cooperative agreement between the County, CDFA, and USDA Wildlife Services for the control of other vertebrate pests such as skunk, raccoon, opossum, beaver, coyote, bear, and mountain lion, that are damaging agriculture or that are a threat to human health and safety.