This Camellia plaster air freshener can be used at home, in the car, and in the office. You can also hang it in your closet or bathroom. This plaster air freshener is made of non-hazardous plaster.  Also, you can buy the scented oil (5ml) and when the scent fades, you can just drop a few more drops on the back and continue using it. The scents are phthalate free and you can choose from Mango Papaya, Macintosh Apple, Daisy, Chamomile, Lavender, Peony, Sweet Pea and Rose. *Due to the handmade nature of plaster air fresheners, there may be slight differences in color or pattern, and there may be slight stains due to bubbles or oil. ***We are not responsible for any damage that may occur due to spilled oil. If oil spills, immediately wipe your hands with a towel or wash your hands with soap.