This concentrate has surprised me. It has cleaned up soap scum, taken care of kitchen counters, bathrooms, and something a little unexpected. I have a garage door that gets very dusty. I cleaned it with a concentration of 1:15. I made sure to get every bit of dirt off. The garage door lasted about 2 months before it needed another cleaning - this is amazing to me because when i would clean it with other products, the dust would "stick" again within the month. I'm never going without this cleaner again.