Because Ballocks and Booty Balm are butter and oil based and do not contain water it is not uncommon to develop build up in your shorts. The best way to combat this is to wash them after each ride in hot water and in the washing machine. If you need to hand wash your shorts you can also try regular Dawn dish washing soap. This really cuts through the grease. You could probably put Dawn into the washing machine but only put a small amount because it might over suds the machine.