I have found that if you really want to get your bags clean, take a bucket and fill it with water and ice put the bags in ther and let em get cold as you would if you were making a batch of bubble, then agitate a lot with your hands, rubbing the basg against one another. Them flip the bags inside out and repeat the process. But the best way to keep your bags clean is to rinse em and scrub em a bit after each use.