I used this cleaner on my washer. I have a washer that is over 10 years old, and it was in desperate need of a cleaning. I was pleased with the results that I got. Before I used the probiotic wash I was getting some lint deposits after my clothes finished washing. Afterwards, my clothes came out lint free. There was also no musty odor after the cleaning. My washer is performing like it is brand new again. I am going to be keeping this wash around.