I am new to vaping. I just recently bought a box mod and a box of cartomizers. There were 5 cartomizers in the box and they had a 501 fitting. They were not anything fancy. Think I paid like 8.00 bucks for the 5. My question is this. What is the best way to clean these. I have seen different videos on some people using vinegar and baking soda, but I think that was on an atomizer and did not have to deal with the polyfill. With this polyfill in the tube what would be the best way to clean. I would like to make them last as long as possible. Do not want to end up spending alot of money just on cartomizers. I really don't know how long they should last. I am making sure I do not run them dry. Thanks in advance for the advice.