Reed diffusers are longer lasting. Reed diffusers scent much slower than candles; they scent your home more gently. A reed diffuser is one of the simplest of home fragrance products. It doesn’t need a flame to work (so no need to keep an eye on it). No aerosols, and requires no power to work. Simply place the reeds in the fragrance, and you are good to go. What’s more, reed diffusers leave behind no residue, so you can leave them to diffuse scent and not worry about anything at all. Pick the Best Place for Your Reed Diffuser.