I've done it with my Aspire BVC's and iClear 30 heads without issues. I also give them a run through the dishwasher after. The vinegar also works well on the bottom of the nautilus where it gunks up by the spring. It's the only thing I have found so far that takes the chocolate smell out of my nautilus from Halo's Shamrock and Belgian Cocoa.I'd approach this suggestion with care. I tried a vinegar soak once with a stock head and couldn't get the vinegar taste out of the wick no matter what I did.