Fresh Products' Eco-Air air freshener, outperforms gels, wicks, aerosols and are 100% recyclable. The fragrance lasts for 30 days. The fresheners also fit TC/ Rubbermaid and other dispensers. Herbal Mint fragrance is packed 6 per box. Easy Fresh is the only air freshener in the industry offering closed loop recycling. If you send back the used air freshener to Fresh Products, they will regrind it and produce more air fresheners. They will also pay the shipping cost.