Getting the hang of this GG4 stuff now. Used it on its own today with no Fairy. Only put 4 cap fulls in with 2 gallons of water, was using about 3 times that much before.
Using a slightly weaker grip this stuff is really easy to take off the windows. Also theres hardly any detailing to do. I recommend to any 1 who hasn't tried it to give it a go, though it takes a few days to get use to. Once u have it speeds up your work.
Im guessing that after a few visits using GG4 it gets even more easy because all the fairy residue has gone?