Les is just like you and me, he hates stuff that doesn't work as advertised. When he was formulating the O2 system, it was originally designed to be diluted at 1 oz. per gal, and in fact on light soil it'll work at 1/2 oz. per gallon with dwell time, but he didn't want anyone dissatisfied with their initial experience, and knowing that most cleaners clean dirty carpet, he set the recommended usage at 2 oz. per gal, it is still an excellent value, and a good solid universal pre-spray.
The O2 extraction rinse is the sleeper, that just plain rocks.
As for the glug-glug technicians, Just what are they pouring it into? a pump up or batt. sprayer really requires a measuring cup, or I'll bet your chem cost are all over the place...as are your results?
I can't even imagin trying to eyeball 15 oz. in a HF sprayer?
The O2 extraction rinse is the sleeper, that just plain rocks.
As for the glug-glug technicians, Just what are they pouring it into? a pump up or batt. sprayer really requires a measuring cup, or I'll bet your chem cost are all over the place...as are your results?
I can't even imagin trying to eyeball 15 oz. in a HF sprayer?