California Department of Fish and Wildlife

Fish and Wildlife Loss Investigations

Fish loss

Each year, WIL investigates reports of fish and wildlife losses due to pesticide use. If it is determined that the loss was caused by pesticide exposure, coordination with the appropriate County Agricultural Commissioner's Office will help ascertain whether the pesticide was used according to the label or was an illegal use. In the case of an illegal use, enforcement action may be taken by CDFW and the County Agricultural Commissioner's Office. If the use was according to the label, it is important for WIL to monitor the situation to determine the extent of the problem and if regulation change is needed to protect wildlife. A current example of this is the legal use of anticoagulant rodenticides causing non-target exposure in predators and scavengers.