Our son was in drum corps every summer for, I think, 6 years. I discovered Oxy Clean works better the hotter the water you can use. The clothes that came back after a summer living on busses and in school gyms, touring the US, and doing a physically and musically demanding show every night -well those clothes were horrific. Some were beyond saving but OC and hot water did the trick for the rest. H-O-T water rules right next to OC!