hi there I got a new male yorkie about 6 months ago he 19month old but every chance he gets of going up my stairs he just poops all over I have my back door open all day long esp in summer but he never goes out to do it he seems to prefer to go do it on my carpet I have just bought him a crate witch I put him in at nite I dnt like to do it but I also dnt like to think he pooing all over my houses pls help I just dnt kno wot to do with him he just a cuite little thing but he spoils himself by pooing in my hses iv even had bk door wide open and he has peed all over my kitchen floor just right nxt to my bk door witch is open pls any one give me advice on wot to do