It's not that they're avoiding it. It's that one out of 10-15 was over the side, which I've been reading is just what they do sometimes. There's still plenty of #1's that are inside the litter. And all #2's have been in the litter box since I built the hidden litter box.

And we definitely have a good litter that they seem to like. I can't go back to the old stuff, as the new stuff is 99% dust free, which is so much nicer than before.