When 'boondocking' camping for many days, we would start to get a slight sewer smell emanating from our black tank into our RV. This was despite proper flushing, extra water and chemicals. After doing some research, it appears that there are multiple sewer vent caps that you can buy to replace the standard one on most RV's. We purchased and installed the 360 Siphon Vent sewer cap and installed it, and much to our pleasure, it has completely eliminated our sewer smell problem! Watch the video to see how easy it was!!

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