There does seem to be something about the aerosols that allow them to work better. We actually purchased aerosol cans by the pallet for a while at our full serve. That was very expensive so we experimented with concentrates until we found a system that works for us.
Most of you probably know this but maybe it will save someone some time.
- be careful mixing the concentrate - too strong will streak and too weak won't work as well
- we use damp microfiber towels - (if the windows are really bad, be sure to use two towels, one for the initial cleaning then a clean one for buffing it to perfection)
- Always frame and fill and clean both directions finishing with the horizontal
- Be sure to apply a mist of window cleaner to the entire window (not just the center and expect to move it around with the towel) don't over wet the window
- Check your work
David