I was called by a lady in Bath who knew she had rodent trouble in the shape of mice or rats. I soon found evidence that mice had found a hidden chocolate bar in a tuba instrument case. there was a pile of shredded wrappings and mice droppings. Also found in kitchen and loft. Outside inspection found that all the air vents had holes larger than 6mm thus allowing the pesky mice to invade the ladies house again. This lady in Bath will be safe soon a I have planned to proof all the air vents.