Kind of expensive; $1 for one cart, but wick material may be available in higher quantities for cheaper. Basically it is a cotton wick with coper wire woven into it, designed to pull lighter fluid to the heat source(exactly what we need!). There is absolutely NO TASTE from it at all. I used a cappaccino flavor that I didn't care for, and for the first time it actually tastes like it is supposed to. Basically you put one end of a NEW wick down all the way to the bottom of the cart and bend the wick at the top of the cart. Pull the wick out, double it over at the bend you made and cut the long end to match the other. Now make second piece just like the first, and insert both wicks loop side down into the cart. It took at least 10 drops, but I did have to push the dropper down in between the wick ends to get it wet before filling. It fills a little slow, but well worth it. Much more abundant vapor, very smooth and consistent every time. Plus NO taste what so ever. I'll report back in a couple days, and research the material to see if it is available in bulk for cheaper. But in this case, it was free as I no longer have a use for spare wick for my Zippo.
