Rudy, our 7-month old chihuahua-terrier mix has been fully house trained for a while (with much thanks to THIS BOARD!), but he has had limited access in the house. He's only been allowed in the kitchen/nook, foyer, and mudroom area where there are hardwood floors. The rest of the house is carpeted, and he's not been allowed in there. So today, we decided to let him have the den as well. We were very calm and let him sniff all around, and told him what a good boy he was. Within an hour, he's peed in there THREE TIMES!!! [

] Come on!!!
Do we really have to start the whole housetraining thing all over again?!?!
We're so distraught.