I have two dogs that will need let outside to use the bathroom while I am at work. There is a fenced backyard. One of the dogs is a little mischievous, so they need to be watched the whole time they are out there. They can come back inside after 5 or so minutes (once they at least urinate) unless they want to stay out back longer. They are both very people friendly and behaved other than that, a teenager could do this job. They can be put back in their crates afterwards. They shouldn't have a problem going back into their crates when you ask them. I also have four cats, but they do not need anything. Just don't let them sneak out when you open the back door.