I take it both boxes are those automatic ones?

I've never used one of those types all mine are the old fashioned scoop-it-yourself type.

For my cats they've never cared if I get a new box, or even move the boxes around, they seem to use them just the same.

I know some cats are really fussy about their boxes and I'm wondering if there's something different about the new box? Is it smaller/larger, deeper/shallower? Different litter? Different noise than the old one if it's an automatic?

If nothing basically is different I'd try just leaving the old box empty of all litter and see what happens. Could be the cat is just using it because it smells familiar, even if it's stinky, you could try adding just a bit of the dirty litter to the new one so the cat's own smell is there.

Sorry I don't have any personal experience with this one to help you with.


Good luck.