It works wonders!  We have two Boxers-a 4 month old puppy and a 3 year old that we keep in our laundry room.  Needless to say the puppy likes to destroy things.... we added this pen and it keeps him away from the walls and door frames.  Our older dog used to refuse to go into her crate but she willingly goes in the pen.  It’s been a WIN WIN for both dogs.  Great product!