I just rinse with warm/hot water, pat dry with a paper towel, then dry burn until the coils glow. Takes less than 5 minutes and I have yet to get any leftover flavor from the previous juice. Anything more than that, and I just build a new coil. It's SO cheap and quick, you might as well if you have to mess with it too much. Of course, if you're scraping pennies, do what you gotta do.