Description:100%Natural, Green&Chemical Free:Uses Sustainably Sourced Activated Bamboo Charcoal. 100% Safe! Fragrance Free, Chemical Free and Non-Toxic. Through specially formulated carbon activated bamboo charcoal,our purifying bag works naturally as an odor remover and air purifier to maintain a fresh, breathable environment. Easy to use:Simply place the bamboo charcoal bag in or near environment. Such as living room,kitchen,pet areas,painted walls,car,shoes,shoe deodorizer, gym bags. Long lasting:Leaving activated carbon in the sun for an hour or two once a month removes any moisture it absorbed and refreshes it,and these air fresheners last for more than 2 years.