Pure Natural and Health Materials Made from natural North American aromatic red cedar without adding any toxic chemicals, effectively repel moths, insects and dispel odor, protect your valuables and clothing. Now say goodbye to the old-fashioned moth balls. Long Lasting Control and Protection The original smell of the red cedar is light and lasting so you may only smell the fragrance when placed under your nose but it does not affect the effect. The scent of each cedar ring lasts for up to 12 months and can be refreshed as required by polishing wood surface or spraying cedar oil, will be strong again. Keep putting out insects and pests. Household Good Helper Natural red cedar naturally repels moths, pests, mildew and mustiness, absorbs moisture and odours, provides a fresh clean scent and keep your clothes fresh, ideal for wardrobes, closets, cupboards, drawers, shoe cabinets, cars or anywhere in your home. Easy to Use Multiple Usage Pack of 30 Cedarwood hanger rings (4.8*4.8*0.6cm) can be hung up on hangers, placed in drawers, lockers or laid on shoe cabinet storage bag, cars. These anti-moth wood are well made that doesn't scratch delicate fabrics can direct touch with sweaters, wool clothes and so on. Value added pack allows for multiple positions and areas to be protected.