I jsut roll up a thin strip of paperboard, like cut from a business card or whatnot... Anyways, just roll that sucker up and stick 'er in the end of your joint. Keeps the joint from smoshing together and keeps the herb from getting sucked out. I virtually always use one.
Buck268 Reviewed by Buck268 on . cardboard filter whuts up yall whut is a cardboard filter, ive been smoking for a couple years now and i have never herd of that until now... how does this work and what is it for?? -later Donel Rating: 5