Right, I'll start from the beginning. Last weekend ago my Dad let my cat in and he failed to notice that she had a mouse in her mouth. It was only when it ran across the floor he noticed. So I have spent the majority of the week trying to catch the mouse before my cat killed, which she now. Anyway to the question at hand apart from stopping her going out how I can I stop her catching mice because if they have swallowed mouse poisoning or anything they could make her really ill. Oh and I have a pretty good idea where the mice are coming from (a jungle of a garden a few doors down) if that helps?