Acana Hanging Moth Killer and Lavender Freshener Kills moths, eggs & larvae safely with the latest technology to provide long-lasting protection. Additionally, the lavender perfume with natural oils, freshens continuously. Each unit lasts up to 6 months, dependent on area, temperature and airflow and has an automatic end of life indicator, to confirm in real time, when it must be replaced. The active ingredients are sealed away in a specific plastic holder, which controls its diffusion for consistent performance, whilst avoiding any direct contact with clothes or hands. Each unit covers approximately 0.50 cubic metres. It is recommended to use 2 units for the average size wardrobe or a single unit when placed amongst clothing in drawers.