Surpassed expectations
I put this in for my mother, who decided to get a cat.  The litter box is in a back bathroom, and within a week the smell was fairly strong - even with daily litter box cleaning.  I picked this up and within 24 hours, it had made a huge difference.  One thing that seems to help is that she had one of those plug in type air fresheners. I took that out, and just used the GermGuardian. It really helps, at least when dealing with cat litter boxes!
Rating: 5 stars