My wife and I tried to leave Bella out to roam when we weren't around, and it was a miserable experience...
We started by leaving her uncrated for 45-60 minutes, when we would go shopping or to dinner...she started out great...no problems what so ever...we would come home and give her all the praise possible...then we graduated her into 1-2 hour breaks...and then ultimately into 3-5 hour breaks never leaving her alone more than 5 hours...
once we started leaving her alone for 3-5 hours she started becoming destructive...It was hit or miss too...one time she would be great the next time she would be destructive...when i say destructive, she would chew on cell phone chargers, she would climb the couch and go on the counter to get a spatula and chew the spatula, she would tear up news papers that were on the table, and she even destroyed our coupon book...
these are things that happened over time, but then she started having accidents in the house...and that is when we decided to go back to the crate...Bella doen't particularly like her crate, eventhough we continually praise her, when she goes in there...and she doesn't have any accidents in the crate...
so