I would start with the food source first. Try to get the Dog food/bird seed/etc off the floor and in re-sealable bins. That gives these critters less incentive to stay in the garage. I'm not so sure that the sticky traps will work that well as these little guys jump about 1-2 feet straight up, so they may jump to a heat source once the engine cools down in the night time hours. I would probably try the Bounce sheets (at the very least they'll smell better), but definitely get the food to a place that is inaccessible to them. I have my dog's food in a large rubbermaid bin with a lid and the bird food in smaller bins in shelves about 5 feet up on the wall.