Eco-Air Dispenser is a 30-day, passive air freshener that mounts to the wall or sits on its own. Open-air design on the air freshener (not included) creates maximum surface-area exposure and space for airflow for an efficient fragrance release. Dispenser does not require any batteries. Refill air fresheners are infused with natural fragrance oils so messy gels and liquids do not happen. Air fresheners (not included) are recyclable and part of Fresh Products closed-loop recycling program.