Yes i heard of this from a C/C cleaner in my area. He works a lot for our asian brothers.
He said they love it.
I have tried this on the last few jobs i have done and can say it smells great. it is supposed to jump back out after the custie has vaccumed a day or two later.
Paul.
I have also started to explain to the custies about enzymes killing the bacteria that causes odour with this stuff

, They love it.