I clean my heads in Ever Clear or Absolut Vodka. I keep a cup by my sink and drop them in. I've also used denture cleaners like Polident for the bodies and such then rinse them with fresh water. I don't wash off the Aspire heads with water nor dry burn them. I only dry burn single coils. The Aspire heads can also be rebuilt if you have the eyes for it, as shown by Rip Tripper's videos.