M
MICK the Tiler
getting your floors clean "OFF THE SPONGE" so to speak can be down to technique. Grout the floor then wait till it firms up a little then cut the floor once in a circular motion to smooth out the joints and get an even grout haze. Then do your second cut but this time when you place your sponge on the floor drag it across you and don't lift it mid pass keep it in contact with the floor lift it only after youv'e wiped say 3 tile wide flip the sponge and repeat further down. It will take some time and practice but once mastered you rarley have to wipe off grout haze.
Hope this helps.
Hope this helps.