I think most guys know what I mean about old school technologies, yes I used them for over 20 years , from my experience I found many of them to be harsh and aggressive, I was always open and receptive to looking at new technologies as long as they were considered safe, I lost trust wth the major brand manufacturers a long time ago for obvious reasons, I come across many companies who claim their cleaning solutions are safe but from experience and testing their products many are just trying to jump on the green revolution, there are some very safe and effective cleaning technologies available today which I would class as new school technology, I have taken the time and been open and receptive to trying them out some very disappointing and others I have found to be game changing, I am not going to try and push my findings but would suggest to others be more open to change as there are incredible advances happening not just for our industry but in all industries.