The pieces have sharp edges and are very rough.
My cats didn't use it, they went into the litter box and straight back out again
It's also very noisy when cats run over it
I put my hand on this litter once and it's really painful.
Understandable that the cats don't like it with their sensitive paws
I gave it a go in my litter box and when my cats stopped using it I decided to mix it in with my regular litter. The 'Crystals' are very rough and this is unacceptable for my 5 cats.