I tried for 2yrs with no luck to get rid of a disgusting 30sqft turf area where the urine kept pooling into. I flung around 1gal of OXY from a watering can, it foamed up and I mopped the top off after a few hours. 2 weeks later, still smelling ridiculously fresh AND my dogs don’t pee there anymore because their scent is GONE. I’m still in shock actually.