There are several ways...some people just flush the cartomizers with water. I boil them several times. Boil about 10 mins...rinse...boil again. I do this over and over until the water comes clean. Then set them up on a cookie sheet and bake on 190 for about 3 hrs. Let them sit for a few days to make sure they are good and dry!! Also, if you go to this link you can find out how to take the carts apart and clean. I do that now, it's not nearly as complicated as it sounds.
Visitor Forum - D&B Gold
click on news, then you'll see a topic on cleaning cartomizers
well, I just copied it here for you:
A good friend of mine and member of ecf posted this on the ecf forum:
"Cleaning and Rebuilding an ECHO/iGo carto:
-pull out the stuffing with tweezers
-rinse both layers of filler material off in really hot water
-rinse the carto out and place it in the ultrasonic with vodka for cleaning solution for 10 minutes (or just soak in vodka)
-shake the vodka out and put the carto on a manual battery - hold the button down for about 10 seconds several times until there is white stinky smoke coming off it and you can see the coil glowing red. (this is called dry burning)
-rinse the carto again and toss it back in the ultrasonic for 10 more minutes
-dipped the filler in vodka and rinse again in really hot water - spread it out on paper towels and press more paper towels down to soak up all the water
-pull the carto out of the ultrasonic (vodka), rinse well then let it and the filler material dry for an hour or more
-drip 4-6 drops of juice in the bottom of the carto to get the coil and wick wet
-wrap the filler around a straw making sure the small inner filler hangs out the bottom a bit
-use the straw to ease it into the carto
-tamp down pretty hard
-fill and vape
I keep the filler material and cartos in a baggie and don't put them together until I'm ready to fill and use them... that way I can prime the coil with juice. Filling with a syringe the first time does work better.
I'm not sure if using just plain vodka to soak it would work as well a the ultrasonic but I think it would do pretty much the same thing. I got the little ultrasonic from my local jeweler for $19.99."
The only difference i do is I don't use a ultra sonic.
after removing the filler (easier to remove if the filler is wet) I boil the cartomizers and filler changing the water every 15 minutes until they look clean.
I then soak the filler in a mixture of clorx and water until snowy white.
rinse the filler very well.
I also split the end of the straw abput 1/2 inch so that it will flare when it bottoms out in the cartomizer, this helps the filler to seat better.
I hope this helps people get longer life out of their catomizers.