Very clever idea. Hope our 2 feral cats actually use it.Easy to put together. Hope it doesn’t leak when rained on. Can’t say much as only  had it up for 4-5 days and cats are so timid. That’s why I gave it a middle of the road score.update:  after many weeks of feeding the feral cats with feed bowl right by the house, they finally started using this house in the cold winter! It was a great invention , and the cats were well fed and warm and good mousers!!