Anybody know if dogs are less likely to urinate on smooth surfaces? My Sugarplum is a 5 year old puppy mill rescue who was caged pretty much all her life, and she isn’t housebroken. Right now I am trying to pad train her. Usually a dog has to go within an hour after eating and/or drinking, and also I’ve learned to read her signals. (Catching her is a whole different story though). Anyhow, when I’m lucky to catch her and put her in her indoor pen, sometimes she does and sometimes she doesn’t always do it on the pad. My flooring is carpet, and it would take four pads to cover the entire surface area of the pen. I also want her to learn to tell the difference between the pad and the carpet, and to use the pad. So this is what I’m thinking: should I maybe put a plastic sheet on the entire surface area of the pen, and put the pad in one corner? I’ve heard that dogs are less likely to urinate on a smooth surface, and it would also protect my carpet in the event the pad slips or if the dog still didn’t use it. Thoughts?