I've been cleaning many of my shop fronts for some years now using fairy and getting good results, but than i came across sites like this one with so many people raving about gg3/4 and how much better it is than fairy, so i had to give it a go.
after using it for a week now i can't say i feel 100% happy with it but i'm going to persevere with it and learn to work with it.
i've heard people who use wfp say that it can take several cleans on windows that were cleaned the traditional way, (ie i'm guessing with fairy) for it to work.
my question is,
is it the same with gg4, that it takes several cleans for all that fairy to come out and the gg4 to really make a differents ?