Good day!
My experience with Trixie was not good; in one batch, the seams were defective on 8 pieces. I have just reported this to the hotline as well.
Not sure if I would use these in a regular litter box as I think they might tear easily when digging. However, they fit perfectly as bags in the waste drawer of my Litter-Robot 3. So I would definitely recommend them for that purpose!