Here's a great article on cleaning gear and the hazards of biological contamination in your gear. aka "Universal Precautions"
http://info-electronic-cigarette.com/do-e-cigs-cause-mold-in-the-lungs/
I always have alcohol wipes, q-tips and pipe cleaners with Isopropyl alcohol 81% handy. I back flush sealed coils with it for cleaning, fresh flavors and extended coil life. After the flush I use a bottle of distilled water to flush the cleaners and burn off the coils.
http://info-electronic-cigarette.com/do-e-cigs-cause-mold-in-the-lungs/
I always have alcohol wipes, q-tips and pipe cleaners with Isopropyl alcohol 81% handy. I back flush sealed coils with it for cleaning, fresh flavors and extended coil life. After the flush I use a bottle of distilled water to flush the cleaners and burn off the coils.