My Chihuahua is not completely potty trained, but she's well on her way and the way I did it for both poo and pee is consistently taking her outside after play, after eating and at least every hour at first, then every 2 hours. This was alot of going outdoors, but now I think she has the idea really well. However, we do have an occasional accident when I'm not attentive enough to notice the signs. Now she's really good about going to the door when she has to go. However, if I'm not watching her, she will do it on the floor, so I have to keep an eye on her at all times. Only once did I put her nose in her pee and it was one of those days when lots of irritations cropped up and I was not in the best of moods. That only happened once and I really don't believe it did any good.