Gary Bunzer, the RV Doctor, demonstrates how the recently developed 360 Siphon Vent effectively removes odors inside an RV by exhausting them out the roof vent before they have a chance to invade the RV living space. Holding tanks that come standard with most RVs are simply designed to keep rain, debris and rodents from entering the RV, not prevent odors. Most RVers have at one time or another dealt with obnoxious odors from their holding tanks. This product is designed to eliminate them, and based on RV Travel’s experience, does just that. The product is available at most RV accessories stores and Amazon.com.