Airworks 3.0 is the newest inovation in passive air care systems. It contains Metazene brand odor neutralizer and covers 5000 cubic feet of ambient air. It has a sleek and compact designed dispenser and the dispenser's Timestrip tracks when it is time to change cartridge. The cartridge will not drip, spill, leak and is environmentally friendly with arecyclable container. No batteries are needed and refills last up to 60 days.