I place mine in a small bowl of rubbing alcohol and let them soak for about 30 minutes. Then I use tweezers to pick up each one letting the alcohol "cup" in the atomizer. At first the alcohol might drip very slowly from the screw end of the atty but as I keep repeating, the alcohol begins to stream out as the atty gets clean of old
juice gunk and opens up. I then rinse under hot hater, blow
through, and let dry on a paper towel.
After a good burn on the battery in about an hour, they are good to go.The last time I used this method I brought back 6 of 10 attys I thought were dead and had tossed in my dead supplies bin.