potty train a dog

Hi All, I hope you all are having fun. I am starting this thread because lots of people are worried about dog potty training. And even if some others who have potty trained dogs are worried about the cleanliness element. So after spending last 6 months, we come up a product idea that we think...

My two 5 year old Chihuahuas aren't fully potty trained.... I've got this fence thing that can fold out like a playpen and I was thinking to set up some newspapers and beds and toys and stuff and food and water and put that there while I play some games and watch TV out in the living room and...