Does anyone have mouse problems in their greenhouse? I've had whole families of deer and field mice attempt to set up housekeeping this winter. The greenhouse is absolutely clean of anything for them to eat but it's warm in there. I've set traps, used mousebait etc. One kind of mousebait was green and I found tons of little green turds throughout my drawers and cupboards for days! They seem to be under control right now but I was wondering if anyone ever used those devices that emit a highfrequency pitch that is supposed to drive them away. I saw them at Lowes last week and wondered if they work.