Many of us use our backyard grill for cooking during the warmer months. But as you cook up burgers and chicken wings, you’re leaving grease and food traces behind that are enticing to small animals like mice. To prevent mice from invading your grill, cover grill holes that they can enter with screening or even just painter’s tape -- but be sure to remove it before you use the grill again. Be sure to clean the grease trap thoroughly each time to remove the smell of cooked food. There are also companies that make wire mesh covers designed to cover vents as well, which you can find at home improvement stores or online.