The F-MATIC Passive Air System has a NEW Twist! Using the same premium, VOC-compliant fragrances as our previous passive air fresheners, we designed a cartridge that is completely spill-proof after activation. No wrapper! Twist activation is nearly effortless with our patent-pending, two-step twist and click execution, an audible CLICK signaling that the cartridge is activated and sealed against leakage. The Twist utilizes our reliable, gravity-fueled system that never requires batteries, fuel cells or any other artificial means of power to neutralize odors in up to 6,000 cubic feet of space for a full 60 days. As always, the Twist fits competitors’ existing dispensers for an easy switch to our superior product.