I was no more impressed with this than I have been with other Hartz products. It bandaids the problem but does not cure it. You may as well just spray Febreeze or Oust around your litter box. It produces the same effect. Also, I have a cat who is sensitive to new smells. When I used this, he refused to use that litter box anymore. I will stick with other products instead.

???Wow..maybe I got a placebo product to try since it worked about as well as colored water for me!...I noticed no change at all...I decided to try it when I purchased an off-brand of litter. It failed the test miserably. My solution to all litterbox issues (even with multiple cats) is to use Fresh Step Clumping Litter..Clean Box Daily...and about once a week clean entire litterbox with bleach/hot water solution...keeps everything clean, and sanitary..no odors..and no $5 bottle of spray solution necessary...

Hate to say it but did not cover up cat urine.. we had to shampoo carpet and overhaul...

Couldn't stand this product didn't work at all got it from a friend to try and won't be buying it myself.