We have been struggling with the smell of our two cats' litter for years. I'm our home, the only place we can keep their box is in my office space, so I've been looking for a solution to the stink they create when they use it. Even the best litter and most potent additives don't completely block the smell, but this product does! We have an enclosed litter box and I cut holes on the top of it to allow air to pass through the Purrified Air cleaner. The room hasn't been this free of litter smells in years!
Just about the only thing I would change about it would be to use a Noctua fan instead of the standard computer case fan that comes with the unit. Noctua fans are exceptionally quiet. Maybe the seller could offer a "whisper quiet" upgrade option on the website? Just a suggestion.