radek i did a large greasy dirty eating area today, very heavy soiling. Its part of a really nice contract i have for a large
conference/showground venue, they keep me very busy, been there five full days in the last 2 weeks! Last year i got this particular room looking okay, they were happy with it but i thought it was just okay, if you get my drift (we are our own biggest critics are we not??) This time i used my storm on 600 psi, and agitated heavily with aggresive pads prior to leaving for a 5 minute dwell then extracted................ results were about ten times better, and i did it in about half the time........... bingo, jobs a good un.....
what worked for me, apart from better machines/pads............. same as for you, powerburst and f90 rinse!!!!!!!