Acana Hanging Moth Killer Freshener uses the latest technology to provide long-lasting protection from moths, their eggs larvae Ideal to protect all clothing including woollens, cashmere, linens, furs, leathers and even silks Specially designed to be hung amongst stored clothing:- ideal for wardrobes and rails Each unit covers approximately 0.50 cubic metres. Recommended to use 2 units for the average size wardrobe or a single unit in drawers Kills moths, eggs larvae safely Will not stain Lavender fragrance freshens continuously Each sachet lasts up to 6 months dependent on size of area, room temperature and airflow The active ingredients are sealed away in a specific plastic holder which controls its diffusion for consistent performance Automatic end of life indicator will.