One, have you used it long enough to know when it needs boosting?
and two, do you have enough faith to boost it when the soil level is borderline
and three, are you just a fat lazy American who puts salt and pepper on everything prior to tasting your meal?
Which pre spray have you used enough of (lots of new product out right now so dont tell me how great your 4 jobs with Sutley Sauce is with that little use, cause lets face it, most repeat jobs will clean up just fine with the weakest of pre sprays.)
The more I use my 360iBH the less "Solv" boosting I'm needing but in general when I or my guys test a new pre spray a lot of our opinion is based on how much post spotting was needed. Still need the 02 boost for the pee pee and cof fee though..
We've been through mountains of Redline and Flex so we know just when to spice things up...