Hello, Can anybody tell me how they get rid of the mice safely from there pens without hurting the birds. We have had alot of snow last month and evey time I pick up the birds food to refill there at least 10 of them under there. They have also started making holes everywhere to get to the food that is hanging. I also have many wild animals, deer, foxes that I don't want to hurt. I was going to place some poision down the holes but was afraid if it every got out the birds may eat it???