Most commercial firestarters are wood chips or sawdust held in a nugget or stick form by glues or resins. I would have to say that some cardboard, wax and cotton/polyester lint is better than whatever chemicals are in the firestarters. In my experience, it doesn't produce any gnarly smoke, it just burns, hot and slow, long enough to get your tinder going good. And I usually only use my firestarters if it's rainy or wet, or if it's dark or I'm tired and don't wanna deal with a long arduous firemaking session. And as I said, at least it keeps all of that crap out of the trash heap.
If you want to see something real cool, check out "fire pistons" on youtube. It is one of the neatest things I have seen in a while, and it uses cloth or lint, or even Chaga fungus, to get a fire going. It is an ancient technique, and it is still put to use today. Or there is always the ol' magnesium and striker trick as well. I have one of the little ones from LightMyFire that lives in my pack permanently.