The dog on that set up kept sleeping on the wood in the entrance of the doghouse, he never went in to sleep on the mat. even when i put multiple on top of eachother. I think he didnt enter the "accual sleeping part" of his doghouse for a month since i removed the straw. So i decided to put back the straw in today, if it will be warm soon he can lay in the entrance and outside anyway. Guess what, within an hour he disappeared to sleep inside the house Regret i removed it now.