One of my dry cleaners' employees mislabeled a batch of my dress shirts and they were heavily starched. I normally have no starch added and accept that a little with get into the shirt through the laundering process but these shirts are rock hard and loaded with starch. I want to try to get as much out as I can personally before sending them back to a dry cleaner. Does anyone have a tip as to how to rinse the starch out of the shirts? Is there a solvent or method to use?