Every week when I go to my mower to mow the lawn, I have to take the cover off the top of the engine and remove a mouse nest. It use to be that I would have to do it at the start of the mowing season and that was it, but now I am having to do it every week. Now, the mice are now doing the same thing to my tiller engine. I keep my mower and tiller in a building but I live in the country. I have a cat also but the fat boy just isn't doing the job. Does anyone have a solution to this problem. I don't want to use poison because of pets.