Activated charcoal or carbon can help reduce litter box smells by neutralizing odors, but stick with cat-approved products any time you add something to the litter box.
Veterinary perspective: charcoal can be used in humans and cats to absorb toxins, but it’s not without its risks. But, the chances of activated charcoal come from ingesting large doses to combat toxicity.
How Does Activated Charcoal Absorb Litter Box Odors?
It does this by trapping complex molecules causing odor or toxicity within these numerous pores. Because of this, activated charcoal can “fill up” and need to be regularly replaced.