Reed diffusers are the best alternative to candles. Vibrant scents. No risk of fire. Reed diffusers have a wonderful aromatic scent while being flame-free. Absolutely no heat is needed. This makes them safe for classrooms, offices, nursing homes, homes. Each stick contains 20 or more individual cellular sections that run from top to bottom of the reed- like 20 micro-mini straws, totally open to pull liquid from bottom to top. This wicks the fragrance from inside the bottle, carries it to the top surface of the reed, and releases the fragrance into the air naturally.