Catching rodents is good but won't stop them returning. There is a reason they've been around for so long. There are a dozen more waiting.
Go around the perimeter between the and seal up the gaps between the siding and the rim joist/bottom plate.
Push in a few boxes of steel wool and caulk after. Whatever.
Mothballs and other smelly stuff will also deter them from making a home in your garage.
Found a piece of plastic in the backyard.
