Peter, no offence taken. My point was and still is, is that there are far superior products out there.....so felt it would be easier to just use those than the hassle that is associated with 3m. Scotch products dont have the best reputation as they once did have so again why deal with all the hassle. I protect all my jobs or at least the first cleaning so understand the idea of promoting this type of service. I feel it is at the end of the day the service we provide to the customer not the product itself. Hence my comment of who cares about anything that 3m say. It is already causing concern from your self and Derek and contention isnt always good. Mind you I know I always cause a stir so what the hzll. Anyway, best, Dave.