It's really funny. Your tortoises probably don't even mind a mouse in their house. The mouse provides warmth and tidys up the leftovers... but drop evidence...andThe cats however are another story...I'll be hoping and praying you get through all the antics.I used to go out first thing in the a.m. and there would ALWAYS be a 'gift' on the mat outside the door. . . the tail end or head of a half eaten mouse. But I guess the mice have learned that the cats won't go into the sheds, so they don't come out anymore to be hunted.