Removes odors from the holding tanks and exhausts them out the roof vent before they invade the RV living space. The patented 360 Siphon can only create an updraft, expelling odors and fostering an oxygen-rich environment to speed up waste breakdown. Even environmentally-friendly tank additives can take up to 48 hours to fully oxygenate a standard holding tank. The 360 Siphon acts immediately after installation, with or without a breeze, to provide the ideal environment for proper decomposition, so caustic chemicals and perfumed cover-ups are not needed.