Boss has not been crate trained, I tried it for a little while, but when I'd let him out, he'd become very hyper and a little aggressive. What I'd suggest if you don't want to crate her, make sure she has things to do when she's left alone. For example, Boss always has a couple chew toys out for him, plus, I have these kongs that are meant for stuffing. I prepare two kongs for him with kibble and treats inside and kong stuffing in between the crakcs of the kong. It keeps him occupied for a few hours, then, after that he always has toys he can chew. If you give the dog something to do while you're gone, there is less of a chance they will become destructive. Again, good luck!