You mean you do to want to prespray? I wouldn't recommend that but something like Procyon plus powder won't leave any sticky residue.
There is a cleaning company in my town that only uses Dry slurry and that's it. No prespray. Not sure how they get away with it, but they do. Low hanging fruit.
Why ultrapac on commercial? If you are not fighting odor issues I'd try saigers code red for oily situations. It seems to rinse easier to me too.Ok I’m a little short handed with techs right now so I was trying to figure out if I can move faster with an emulsifier
I guess prespray ultrapak and dry slurry it is
Prochem Dry Slurry, Hydramaster HydraDri or RinseFree, or any other "extraction detergent" designed for just this purpose will do exactly what you want. There are higher alkalinity detergents that are appropriate for commercial carpet as well.
We cleaned from the mid 70's until the early 80's with high heat truck mounts, an alkaline emulsifier (first one we used isn't made any longer; the last few years it was Dry Slurry). We had prespotter when needed.
To be fair, back then we were cleaning dirt colored carpet (brown, rust, olive green for the most part).
There is something to be said for the fact that if you can clean with a pass or two and no prespray that the carpet will dry quicker than if its heavily presprayed with an in line sprayer, then rinsed.