I bought it to get rid of the smell of the pet mice and it worked really well for this.
Have also ended up using it to clean the hearth which had a residual smell of cat piss from where our horrible cat keeps weeing for some unknown reason. I'd tried everything - floor cleaner, bio detergent, air freshener and it still whiffed when I got close. Couple of drops of tap a drop and it's gone completely!
Now started putting a drop in the bottom of the bin when I change the bag - no more yucky bin smells!
It's brilliant!