I have been rotating 3 attys for over 5 months now and every night I take a q-tip with alcohol, clean it, dry it with the other end, blow it out and leave it tilted down to dry. They are old and were giving a less than stellar performance so I put them in Diet Pepsi for about 5 hours and was amazed how well they work now! It is like they are new again! You could use any soda type beverage that has a high acid content like Coke or Pepsi.