Our car diffusers are a nice alternative to the usual car air freshener for use in any vehicle or small space (especially closets, bathrooms, tents, RVs, and even on Christmas trees!). They add a wonderful fragrance that immerses the space yet is not too overwhelming. DIRECTIONS: Unscrew the wooden top and pull the plug out. After replacing the wooden top, turn the diffuser over and allow the oil to absorb into the wooden top. The more oil that is absorbed, the stronger the scent! Enjoy!