Actually... a filtered joint does remove some of the tar..not a lot, but some. That's why your filter ends up getting all brown and sticky. It's the tar and the resin from the thc. Notice how your lips get bitter and sticky when you smoke an unfiltered joint? Personally i stick filters in my joints when i can.. if it's a big 2gram dooby then a filter is a must.

Some filter suggestions?
Phone book cover
Cigarette package
Business cards (non gloss finish)
and whatever else you can find made form similar "filter" like material. :stoned: