Airworks® 3.0 is the newest inovation in passive air care systems. Contains Metazene® brand odor neutralizer. Covers 5000 cubic feet of ambient air. Sleek and compact designed dispenser. Dispenser's Timestrip® tracks when it is time to change cartridge. Cartridge will not drip, spill, leak. Environmentally friendly, recyclable container. No batteries needed. Refills last up to 60 days.