Hello. My puppy is now 12 weeks old. She from the get go was very good about using the puppy training pads to poo and wee. Initially I put a training mat in my bedroom because she was tiny and wanted to stay close to me. Then I put other mats, as well as the bedroom one, one in the kitchen, one in bathroom, which have lino on the floor. She has used both of these for at least 3 weeks no issues, as well as the bedroom one. However, for some reason, she seems to have begun using the floor in my bedroom which is carpeted. Every time she's done this, I've spoken to her sternly, and where possible put her on the mat to show her the correct place. I change the mats regularly and there are three around the house, all of which she uses. However, today, I went in the bedroom to find LOADS of poo, on the carpet, all around the floor. I was disgusted and very angry with her. I don't understand why she seems to be going backwards in understanding... she hardly had an accident at all at the start! Any ideas anyone? I live in a flat and there isn't a garden by the way.