This litter box also comes with crystal litter which is five times better in odor control than regular litter. (tinpaw.com)
It uses crystal litter which can absorb urine and helps to get rid of odor at the same time. (geekwrapped.com)
This odor control also comes from the fact that this model uses a special crystal litter for better absorption of the urine and fast dehydration. (bestpetguides.com)