my family noticed the difference
My wife took our son to the allergist as suggested by pediatrician (asthma), allergist suggested we treat all carpets in home with Allersearch ADS spray. We all noticed a substantial comfort inside the house, as if something had changed. It supposedly neutralizes the allergenic protein present in indoor air, also, our son's asthma also improved.

pet hair and smells are gone!
I have a Sharpe dog that sheds a lot and two coon cats. My boyfriend is very allergic to the cats. The spray gets rid of the smells and keeps the pet dander down so that my boyfriend does not suffer. Before I got this spray he could not be in the same room with them.

Great for upholstery, mattresses, hard to clean stuff.
I usually vacuum my couches and mattresses, etc. like you're supposed to. I bought this because I was moving my two cats in to a new place with my very allergic and asthmatic boyfriend. So before we moved I used this on everything I could and then vacuumed - WAY more yuck came out of all my stuff and I think it has definitely made a difference in my stuff (in combo with the other measures I took like new bedding, filters, and allerpet-c). His allergies and asthma are better in our new 2-cat household than they were in his no-cat one!