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How To Keep Your RV Odor-Free

How To Keep Your RV Odor-Free

We’re pretty meticulous about maintaining our black and gray tanks and never really noticed much of an odor problem. The only time it was an issue was while traveling down the highway with a mostly full gray tank with the driver’s window open. That seems to create a vortex that pulls gray tank odors into the RV.

If you don’t think that gray water can smell almost as bad as black water, you probably haven’t done much serious boondocking. Using such a small amount of water results in a high concentration of soap, food particles and body oils, creating a pretty bad odor. Let’s face it… the contents of both RV waste holding tanks can stink. The trick is keeping that smell out of the RV’s interior.


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After a recent trip with mostly full gray and black tanks, we decided to try out a solution we’d read about many times in Chuck Woodbury’s RVtravel newsletters. The results are in, and we can’t believe the difference. We didn’t think we had much of a problem, but now we’re wondering if we’ve been like those cat owners who don’t seem to know that their house smells like a litter box. Hope not!

So we’re excited to announce our newest RVgeeks Contest! On Monday, May 26, 2014 at 7pm Pacific Time, five lucky RVgeeks viewers will each win two 360 Siphon Roof Vents with a total retail value of about $300!

Be sure to enter the contest and subscribe to our blog to be notified when the winners are announced and to get more great RVing videos and information.

Best of luck to everyone!


Congratulations to our winners!
All have been contacted and their prizes are on the way.

Thanks to everyone who entered!

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Stephen Alexander

Saturday 21st of September 2019

Hi Guys! Looking at you old 360 Siphon Roof Vents video. How have they faired in the 5 year endurance test? Have you had to replace them? I also see the rotating wind vane type. I’d think less moving parts the better.

Any problems with rain going down the vent pipe?

Thanks on advance.



Saturday 21st of September 2019

Hi Steve. Good questions... our original 360 Siphon Vents are still up, still working, and have been no problem whatsoever for the entire time we've had them installed. We contemplated the rotating wind vane type, too... but went 360 Siphon instead for the same reason. NO moving parts is way better than ANY! ???? We love our 360s!

Brian Gant

Saturday 30th of September 2017

Thanks for this recommendation! We were having some pretty bad tank smells in our class A, so we had this installed and it already made a difference! We had an issue today where the house batteries had gotten low while our rig was in the shop. We were trying to treat our black tank and the electric toilet valve wouldn't close properly....for an HOUR! It was completely open while we finally got our house batteries charged enough for the pump and flush to work. ZERO smell inside the rig that whole time. This vent should be standard equipment on ALL RVs. It is such an inexpensive upgrade...I'll recommend this for every RV that has a black tank!


Saturday 30th of September 2017

"Toilet valve stuck open for an hour, and NO odor." What a great story, Brian! Thanks so much for sharing with us. We love our 360s and can't imagine having an RV without them. Hope you got everything up and running on your rig. Safe travels.

Mike Ward

Monday 27th of March 2017

Hey, Geeks!

Just installed these vents on my RV. I was able to do a retrofit vs. a full removal and replace. Documented how to the retrofit at

Thanks for all you do. It really does matter.

Phylana Ladd

Monday 9th of April 2018

How does one know if they need to retrofit??? Thanks!

Gene Jurrens

Sunday 20th of December 2015

I just installed two of these, inspired by your video, and I must admit, also by following the directions on the packages. One minor discovery - using one of those little hack saws like you use in your video, I just laid it on the roof of our MADP and started sawing... it automatically cut the hose down to just under 1/2". Perfect.

After cleaning and sawing, it was obvious that there was a gap between the hose sticking out of the roof and the roof material itself, so as a precaution, I ran a bead of lap sealant around the base of the hose where it met the roof before installing the water collar and final cap. Never can be too careful, right? We'll be starting our long term trip near the end of january and can't wait to not smell odors even with the bathroom vent open while flushing! :-)

As always, like all the others, a great video! Gene


Sunday 20th of December 2015

Thanks for the note Gene! We hope you like your 360 vents as much as we do.

Rob Arturi

Monday 22nd of December 2014

Just installed on my Allegro Bay and what a difference. This is my first RV and I have watched all of your videos- thank you so much. While waiting on delivery, I watched your videos and as a result I'm much more confident and comfortable owning the new rig. I also have M4 LEDs a shot on your recommendation and I must say they are superior quality to what is sold in stores and in many cases, less expensive. Thank you so much for your tips and videos, I appreciate it so very much.


Monday 22nd of December 2014

Thanks so much for your comment, Rob. So glad to hear thaT our videos have been helpful.

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