Yes, that's the IRIS pen we're using. The doorway dog gates are nothing special. Just what was in stock at petsmart and fit our doorways Here's the scoop on "scatter feeding:" Since dogs won't soil places where they eat, take advantage of that natural instinct and provide food in the places you don't want soiled. I scattered kibble on the family room carpet at least once a day, every day for a week so the carpet became a place that produced/served food. (Remember to subtract the amount you scatter from the overall volume the puppy gets daily so you aren't overfeeding.) If there was an accident, I cleaned it up and then scattered some kibble in that location to reinforce that it was not a place for pee & poop.
I have never hear of that ! mine only have accidents on my bedroom carpet. I'm going to start feeding them in their to see if that works.