Toilet Odor in New Trailer

Also , If going from campground to campground maybe consider not dumping till arrival at new destination , the sloshing around for several hours will turn everything in to a liquid !

Getting odor when the toilet flapper is open is normal, think about what goes in there. You should never have odor any other time.

Although it uses a lot more water the rule in our trailer is no matter if it's a 1 or a 2, the bowl gets filled with water before you flush. Then once or twice a day I give it 1 more bowl full. My guess is you have solids in there. Judging by your gauge, they have moved to that side. Take the black to ? and give it some dawn. Drive home and dump at a nearby station so it has some road time to suspend the solids in the liquid.

Start empty tank with about 4 gals water, cup of dawn, cup of arm and Hammer Washing Soda (I can only find this at Walmart in laundry aisle). Dont dump until almost full and forget about the gauges, they never work.

I agree with the Dawn and lots and lots of water. In addition, we use powdered Calgon Water softener to make everything "slick".

Here is the secret,

Happy Camper Tank Powder. Use it in both black and grey and never smell anything ever again. Buy it online.

Black tanks need plenty water to function properly. New trailer, new tank, smells - sounds like lack of water. After I dump I let the toilet run a few minutes after adding the chemical packet. Also when flushing toilet I let the water run a bit. I had smells at first but they went away with added water. Also you might be dumping too often. When I full-timed I'd pull the valve about once a week.

Note that when you open the toilet valve and the fan is on this will draw the odor in. If your dumping before the tank is full that may cause the solids to stay behind while the liquids go out. It's a good idea to get the tank full before pulling the valve. The other thing I've heard of too is if you have the Dometic 300 toilet the sewage can collect inside the bowl.

Next time you're getting ready to hit the road, make sure your tanks are dumped. Then add about 4 gallons of water and a generous amount of Dawn Dish Washing liquid and hit the road. When you get to your destination, dump the 4 gallons. The odors will be gone and your sensors will probably work again. The sloshing of the soap water in the tank will clean your tank, and the soap will keep things a bit slippery. It's a simply way to keep them clean.

My camper also has a black tank flusher and it really does not do "that" good of a job. The best solution I've found is the wand down the toilet into the black tank. That thing always cleans out the tank until clear water comes out. (I have a clear sewer hose section to see just how much junk is coming out). Add some Dawn and a few gallons of water, and drive around, and the tank never smells.

blocked vent pipe ? or maybe the vent pipe was installed too deep into the black tank could be a possible cause.