Thank you! Yes, if they have some heated space to hide, they won't use your house. Put let it stay there--there might be some outcast who have nowhere to go.

@headofcatdept Mine is more of a weather protection in the rain. One side is open. I've now put a warm blanket inside for the winter. Winters in Germany are certainly a bit milder than in Russia. We have a few old huts in the area. I think they have taken up residence there. They then come to my feeding place to eat.