If you've tried everything & are ready to give up - BUY THIS NOW!!!
I am a petsitter & in addition to all of the dogs I board, I have 10 of my own, so yes, we've had our share of "accidents" in the house :(. One corner of our den seemed to have a URINE ATTRACTANT & it only got worse over time.
I shampoo our carpets regularly & have used several different types of "urine remover" type cleaners, but none actually REMOVED the urine, just temporarily masked the smell. The only reason I decided to even try MPP was because of the guarantee. Thank goodness I did!! After a couple of treatments the smell was worse than ever & my husband began the "I told you so" speech but I told him to be patient, that they SAY it gets worse before it gets better. Well, it did finally get better, & now it's COMPLETELY GONE! I saturated the area four or five times, but this area had been treated UNSUCCESSFULLY for years. It may seem costly until you compare it to the cost or new carpet or floors. I've also successfully treated accident spots @ my mom's and old stains on my uncle's carpets. Just ordered FIVE MORE GALLONS. I'll never be without it!!!