Used it today to pad clean a house. It was an older dark blue nylon carpet. Worked great. Stains and spots just melted away. Seemed to work comparable to encap green, but without the white foam trail that gives the immediate illusion of clean. But once the foam trail goes away this would look comparable to that from what I could tell.
Pads were coming off darn near black even though carpet didn't look too awful, maybe the low foam allows the pads to remove more soil? but less encapping going on? Hard to tell but the stuff obviously works. Time will tell if I like it as much as encap green, I'm a long way from drawing that conclusion, but I'm pretty sure already I won't regret buying it.
As far as smell I had my wife to a blind smell test of Dirt Ass. Green vs. encap Green. She said they both smell pretty good, but the encap green smell a little bit better. She said she thinks it smells like there's a touch of ammonia in there. To me the smell of Dirt Ass. Green is pretty mild, I don't think any customers will be complaining about the smell of this stuff.
I used it at just 3 oz/gal.