Place the bag in any area where you feel moisture or odour building up. Great size for shoes. Depending on the amount of moisture will depend on how often you may need to rotate them.
To maintain and keep your charcoal air purifiying bags working at their best, place in the sun once a month for an hour, then they are ready to re-use again and again. The bag can last upto 2 years.
To dispose of, open bag and place charcoal in the garden, where it will break down.