TLDNR: pest control crap.I keep it in the garage but that is possible. That is very possible. My wifes Lincoln isalso in the garage now so I am going to have my neighbor set some traps
I’m personally a fan of peanut butter for most rodent traps. Theres a reason squirrels are often called tree rats. Rats are a lot smarter than mice, and a trap type that will catch a mouse often doesn’t work on a rat. The first step iirc is thinking about needs. A pest needs food, water, warmth,(depending on climate) and an entrance. The easiest one to destroy is often the entrance. How are they getting in?(if they’re there). Food and water is often outside the garage, so blocking the one often gets the others too. Maybe look around for a gnawed hole or something. Anything bigger than a Tubman will do it. They're pretty impressive gnawers. Their front teeth are often orange. That’s actually iron. They can gnaw through most stuff. They’re not great at steel though. A sturdy steel grillwork foamed in with spray foam often does it. The minimal expansion stuff is safer because it takes longer to set and tends to work its way into stuff rather than blowing it apart. The preferred method for squirrels is a one way door. Out but not in. They even sell em.
Another one is physiology. A male rat and mouse have testicles that are bigger than its brain. And more than metaphorically. They sometimes drag on the ground. Also they like to leave pee trails. They can often be tracked using them. I might try a black light. Make the fluids and organics glow. Looking for rodent poop is also sometimes useful. Little teeny poops.