A besom is a tool used in Wicca to cleanse and purify a space which will be used for ritual. A traditional Wiccan besom is a hawthorn stave handle with bristles made from birch twigs. These twigs are tied on using thin pieces of willow wood. It is used to cleanse the ritual area before circle casting. With the addition of the pentacle, it can act as a protective piece for you home. Left untreated so you can paint or stain it to suit your magical needs.