Sure, I've heard of it, I know someone who has one. It's two pipes placed so that frames will rest on them as if they were in a hive box. They are built so that when the frames are in place, they are tilted 45 degrees into the sun to the east in the summer. The sun helps keep the wax moths at bay. When temps get lower and rains start, put top covers over them to keep them dry or move inside for storage. If you are where it is cold and snow, leave outside as wax moths won't be a prob in cold winters.