I have six ferrets and let them stay out all day. I think it is much better for their mental health. When they were caged, there were many more fights and general signs of frustration. The tradeoff is your house, which must be thoroughly ferret-proofed. We put extra latches on all cabinets, hung all plants from the ceiling, repaired baseboard, keep all toilet seats down, and installed screen doors so that there are always TWO doors to get in/out of the house. All ferrets are collared with bells so you can hear them and they don't get stepped on. Prepare for some destruction as well - carpet digging, paper shuffling, object stealing, couch scratching, taking the telephone off the hook, playing answering machine messages and not saving, etc. They will definitely help you keep your house neat and organized! The other thing we do is a head count whenever leaving the house or coming back home. There are newspapers in most corners of the house in lieu of litterboxes. So it is a little more work, but very rewarding to see such happy ferrets! Potential dangers: windows they can open, recliners to hide in and get crushed, electrical cords, chemicals/household cleaners, dishwashers, washing machines, dryers, and other appliances to crawl into. Good luck! - Erika (and Misty, Sasha, Lizzie, Socks, Slinky, and Bear) [Posted in FML issue 1413]