My Safe & Suggested Atomizer Cleaning:
Rinse & Blow Out With Hot Water By Hand Only Several Times (No Boiling, No Chemicals or Additives!).
Final Rinse: You Should Always Rinse With Distilled Water Only, Regular Water Has Chemicals and Other Crap In it, So It Will Not Rinse Clean and Leave Hard Deposits Not Visible To the Eye.
After Rinsing: Blow Out Both Ends With Mouth Only (try not to spit). Let Dry Upright. Several Minutes to Hours Later Add 3 Drops Of Juice To Atom, Let Sit A Few Minutes. Then Vape Slowly, Then As Usual.
U Can Do This As Often As U Like. This Will Not Remove Flavorings But Will Safely Clean Enough Out, AKA Maintenance.. Always Avoid Heating & Heaters As Well (Hair Drier Med to Low Heat OK)
Excessive Heat, Chemicals Besides Dangerous Can: Loosen & Flake The Paint (in & out), Melt or Destroy The Silicone & Teflon Isolators Inside The Atomizers and May Take Your Finish Off.
FYI: Excessive Crud & Build Up Can Not Be Removed Safely or Effectively, If its Effecting the Vape its Time for a New Atomizer.
Hope This Helps.
Keep Vapin!