Hi, just wondering what some people use for bedding in outside doghouses in the winter. I have a collie/sheltie who does not like to come in but we do make her sleep inside when its too cold. She's older and loves her doghouse. The last few years we have not had any fleas until I buy the hay for her house and seems like they come. I have an inside dog that likes to lay with her in the house during the day some. Other than blankets, any ideas? Thanks