Resins

Resins permeate the environment with fragrance more so than incense sticks.  They also tend to have a longer lasting effect.  Resins work particularly well to help cleanse the air of cooking and other smells.

Always use resins with a lighted charcoal tablet as most will not burn, or they will not burn well, on their own.  Use in a heat-safe bowl or a charcoal incense censer.