Odd product of the month

We get all kinds of catalogs. This is from the one that starts every product name with "The," as in "The Completely Useless Backyard Flotation Toy," or "The One Hundred and Fourteenth Atomic Watch We've Listed So Far." Anyway, here's the hands-down strangest thing they offer for sale this time around:

Imagine being the dog on this side of the fence. Or if both pet owners installed these things, each intruding into the other's airspace.