Abstract: A pest repellant device is provided for use in and around vehicles, such as cars, trucks, recreational vehicles and campers, boats, aircraft, and the like. The pest repellant device includes a fluid repellant dispenser and an electronic pest repellant unit, including at least an ultrasonic emitter and an electromagnetic emitter. The fluid repellant dispenser and the electronic pest repellant unit are operable together or in coordinated fashion in order to discourage common pests, such as insects and arachnids, small rodents, and the like, from entering a vehicle, and in particular from entering a field of view of a vehicle operator and creating a distraction or safety hazard. Optionally, the device may include an ion emitter that acts as an air purifier.