With mice in the house it's time to take the gloves off. Traps & cats are only partial answers. You need to keep the outside of the house trimmed of grass & brush for starters. Get a few of those plastic 'poison houses',(pet proof) they sell at the farm or home improvement stores. Fill them up with the block poison,close them & locate them around the outside edge of the house, out of the weather if possible. Check & refill as needed every few months. When you 'call in the experts', that's what they will do. We had mice in house & they ruined the outside A/C unit before I fought back effectively.