Well, it's certainly something that's never been done before! I'm not quite clear on how the litter box is supported when in a window. So, in other words, how do you use this if you don't have any windows that are at ground level? The tube part also seems extraneouos. Your design reminds me of this - http://www.catsplay.com/bci535741.php3
- only yours is a litterbox version. I think just having a flap like in the window box in the link is more practical than having a tube.
Re: other's temperature concerns... Although cats who have been indoors all their lives may be picky, I've not really known cold weather to be a problem for cats. I mean, when's the last time you found a cat frozen to death? Foxes, wolves, bobcats, etc. deal quite well with cold, and I can't see a cat physically having a problem with being in the cold for a minute while releaving itself. I do have to agree, though, that the box would stink like crazy in places where it gets hot and humid.
Here's my big question, though: given that the box is ventilated at the top, how does rain affect litterbox usage? I can see that it would cause lumps in clumping litter, and some cats (read: spoiled indoor cats -
) may not want to use it if water is coming in from the top. Maybe it needs some sort of roof or tarp that sits a few inches over the top to prevent large amounts of rain from coming in?