Check for marmots in cars on Casper Mountain, Game & Fish advises

Motorists driving on Casper Mountain face a recurring mechanical problem this summer as marmots are increasingly nesting in vehicle engine bays. Wildlife officials from the Wyoming Game & Fish Department report that these animals crawl into cars through undercarriages and wheel wells to find warm, sheltered spaces. Once inside, the marmots often chew through wiring, which can cause significant damage, especially since some modern vehicle wires use soy-based insulation that acts as an attractant.

Wildlife biologist Kylie Sinclair notes that mother marmots sometimes bring their young into these engine compartments for safety. Because these animals are non-game wildlife, Game & Fish officials generally do not respond to these calls. Responding to every instance would distract personnel from more critical duties like managing wildlife conflict or injury reports. Biologists recommend that drivers proactively check their vehicles for signs of animal activity before leaving trailheads or campgrounds.

There is no consensus on the perfect deterrent for these pests. Some owners suggest using peppermint oil, mothballs, or specialized scents around the vehicle, though results vary significantly. If a marmot is discovered in your car, the best approach is to carefully coax or prod the animal out using a long object like a pole or stick. Officials advise caution, as marmots are capable of biting when threatened, so maintaining a safe distance is necessary.

These reports are a seasonal occurrence in the region, with the Forest Service and other local agencies also receiving multiple calls every year. Drivers are encouraged to stay vigilant during their mountain visits to avoid costly mechanical repairs and protect the local wildlife from accidental injury.