Eco-friendly car diffusers by Adrift Candle Co. are the perfect way to freshen up your ride! At 0.6 oz, our diffusers will fill your car with a pleasing aroma for 3-4 months. Diffusers will come packaged in gift boxes and ready to gift for the new driver in your life or a loved one with a new ride. Just remove the plug, screw the lid back on, invert once, and hang over your rearview mirror! **Diffusers will be shipped with a small plug to prevent spillage. Before use, unscrew wooden lid and remove the plug. Replace lid, invert diffuser, & hang on rearview mirror.**