My Dad was over doing some DIY for me about a year ago and he had to go under the floor to check out some of my bathroom pipes. When he came back up he held about 10 furry mice in his hands which he'd retrieved from under my bathroom floor. There was seemingly a small hole at the back of my bathroom sink which Bonnie was using to STASH her mice. A quick rinse under the tap, quick dry and I chucked them all up in the air for her, you oughta of seen her wee face she didn't know which one to go for first !!! Needless to say we blocked up the hole but there is a lack of furry mice again so god knows where she's stashing them now !!!