When do you know it's time to let your puppy have free roam of the house? I've had Linus in a little pen for the past 3 months, and he's pretty much potty-trained to go on pads. He's alone while I'm at work, so I really want to let him loose! I'm afraid that if left to his own devices, he will find something bad to do (he's kind of a trouble-maker
