My sister has a year old z zhu dog and it does the toilet all over the house in all bedrooms on top of beds on top of kitchen table just anywhere in general. He is walked at least 3 times a day, and wee's about 20 times each walk but still does his business anywhere! I am at my wits end with this and considering getting rid of the dog, this has ruined every carpet in my house and my daughters bedrooms, can you help please??