I've tried all sorts of odor removing products over the years - I have 5 dogs and 4 cats some of whom don't always go where they should ... zero odor is literally the only thing that can neutralize the smell.
This stuff really works. I spray it, leave the room, walk in 5 mins later and it no longer smells. Much nicer than using scented chemical sprays. A quick spray to the litter box and it stops smelling fast (a "competitor" called Eco88 does nothing). I recommend Zero Odor to clients who move into new homes with odors. Strangely, my kitty loves this stuff, too. He rolls on the floor if he walks in after it's been sprayed.
Our elderly cat sometimes misses the litter box and urinates on the plastic stepping pad and the frame of the plastic litter box. We wash all surfaces off with soap and water and can still smell the cat urine until we sprayed the clean surface with Zero Odor. It works.
Works well to keep bathroom areas smelling fresh and clean!
I used this on a fabric chair that smelled a bit weird, took care of it instantly. I also spray the kitchen trash and it works every time.