If you are gone upwards 12 hours a day, both dogs need potty access. Holding it for 12 hours is not healthy for the kidneys/renal system, often the first thing to fail in senior dogs.
Don't wallpaper your home with piddle pads. Too many targets will likely create confusion. I would use an xpen or baby gates to contain your dogs in one room with a piddle pad.
The extra room will also make both of your dogs happier.
__________________ Kristin, Max and Teddy  |