The answer is yes.
We do have some recommendations for the best results however. The MouseBlocker units emit very powerful sounds and vibrations and circulate well in a garage environment however the sounds will not penetrate a vehicle. What that means is the garage will be protected but inside the vehicle will remain quiet. We like the method of placing the Mouse Blocker unit in the engine compartment of the vehicles in the garage making the vehicle not a safe place. With the vehicles protected, often the rodents just leave the garage all together.
If you choose to protect the garage we recommend place the Plug In PRO models in the corners of the space facing the middle and setting them on the floor.