What do you guys use? I've used several different types and they all seem to last a week and not be worth a damn anymore. I've used the vent style, hanging style, etc, they all suck so it seems. I've even use febreeze spray to keep it smelling good, but that only lasts a few days.
I don't smoke or anything like that. The only odor my car gets is a musty old smell, hard to desribe.