Hi Values, I just use a coffee filter and let it drip through- I don't try to force it through by squashing it in the filter or anything- I haven't had a problem with it so far- but if you want ot be extra careful, run hte filtered juice htrough another filter after- I've been dripping for abotu a week now & no problems so far- You jusyt gotta make sure you have enough Glycerin in the mix as the glycerin is thicker, and helps to thicken the whole lot so it won't be so thin that it won't atomize right, plus hte thicker liquid stays in the cart longer and won't have tendancy to run down into battery as much |