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Old 05-25-2014, 11:49 AM   #1
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Odor in bathroom from Black Tank .....

I have been told by the DW ask for help concerning the odor in our bathroom that seems to be coming from the black tank. Is this even possible first of all? Secondly what do I need to do to get rid of it? This has now become my top priority according to my sweet DW !

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Old 05-25-2014, 11:53 AM   #2
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If you have a Dometic model 300 toilet it might be the problem, read thread below....

Dometic model 300 odor problem and replacement

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Old 05-25-2014, 11:57 AM   #3
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Are you using a tank treatment with odor control?

Are you putting some water in the bowl after use?
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Old 05-25-2014, 11:59 AM   #4
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What type of deodorizer are you using, how hot is it there, how often do you dump and flush? These are just some of the questions that could cause your order. O yea, what about that bathroom vent?
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Old 05-25-2014, 02:01 PM   #5
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Also, never run the vent fan when using the loo, it sucks the putrid smell out of the tank. Wait till yer done and then turn the vent on.
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Old 05-25-2014, 11:10 PM   #6
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We too are getting ordor in our 282rk. But it's not confined to just the bathroom. The 282 has a dresser bureau on the other side of the bathroom wall of the toilet and when you open the drawers, the odor is there also, as well as in the cabinet under the sink.
Could it be the toilet seal going into the black tank wafting up odors into the underbelly space and seeping out at the hole for the hose, vent pipes etc?

I've read on other posts that Dometic 300s are being replaced by the manufacturer as defective.
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Old 05-26-2014, 12:02 AM   #7
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check the vents on the roof are the open. You can also install the vents that spin into the wind to make sure if the air is blowing hard it is not blowing into the tank.

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Old 05-26-2014, 03:39 AM   #8
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Dealing with odors.

1) Found a dish cloth under sink in kitchen that turned into a science project.

2) Traveling sloshed water out of the shower trap allowing odors from the gray tank to permeate the bathroom. Troubleshot toilet for hours before a member suggested it might be decaying food from gray tank. Filled trap and problem went away.

3) Poo under ball/flap valve but above the tank. Turbo flush will not clean this. Used flush Wand and a shaped toilet bowl brush to clean best I can during winterizing. Worst case; remove and pressure wash.


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Old 05-26-2014, 04:55 AM   #9
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I had a problem with another camper and tried all kinds of things. Finally, I got one of these.
It pulls just enough of a suction on the vent pipe so that you never get any odor through the toilet. I could even run the bathroom fan when flushing and not have any odors escape. DW was finally happy!

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Old 05-26-2014, 05:37 AM   #10
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Thanks everyone for the input .... the latest is I washed out the Black tank until water was completely clear coming out of the tank ...... We put the deodorizer in as we have since we got the trailer, we keep a small amount of water in the bowl ........was for sure that this would solve the issue but nope, still have the odor. Man this really bites, a brand new trailer should not have an odor coming from the toilet .

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