Runbugz activated charcoal air purifiers are manufactured using the natural and high quality coconut shells. The resulting granules are highly absorbent and helps in removing odour, pollutants, excess humidity and allergens, etc. These air purifiers are extremely long lasting and can be reused time and again, up to 3 years-you only need to place the inside pouch in the sun for a few hours once every month to reactivate the charcoal. More Info- https://runbugz.com/products/activated-charcoal-air-freshener-small-75gms 01141323173