This one is sure to spark a bit of controversy. This mat reinforces where your pup must stay, or else s/he gets shocked by an invisible radio fence. From Pet Safe, the pitch says that this is a portable alternative to traditional crates. We don't have a dog, but aren't most crates portable? Yes, this could be convenient for people. Yes, it's a prettier design than most cages. Yes, it's nice to not have bars separating you and your pet. But we don't like it and want to hear from Chicago's pet people why, oh why, this might be a good idea (or why you think it's not). We're all ears!