We've been talking about this for ages. The cats need outdoor air; we need the a/c. Ellie likes company, but the cats tend to slip the leash. Elmira, NY is a cat leash-law city. Solution: the KittyWalk.
The walk is visible from our workstation. And Ellie protects my cats from dogs. Punchline: we live in a cat-leash city, right on the border of a town that doesn't even have a dog leash-law. Not that we can swear by, anyway.
Expensive? Oh, yeah. It will pay for itself in no time, no doubt. Love it.