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Old 08-11-2014, 11:06 PM   #1
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Flies/fleas in the black tank

Hi all, i keep my black tank very clean. Use sani flush every time i empty the tank and use Oxi Kleen for the tank. Recently I have noticed some small flies come out of tank when we flush the toilet. Any ideas? Recommendation to get rid of these flies/flees?

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Old 08-11-2014, 11:12 PM   #2
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Could try some bleach in the black tank. Had success with that in the drains in the S&B with fruit flies. Add it and fill the tank full.

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Old 08-12-2014, 12:45 AM   #3
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If they are little delta wing jobs, smaller than a vommon house fly, they are likely to be drain flys. They commonly breed in drains -- black water, gray water, or any other type of drain.

Try Googling Drain Fly. The internet is loded with methoda for getting rid of the,.

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Old 08-12-2014, 01:03 AM   #4
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When you hook up your hose at a campground, make sure you are not leaving your valve open. It gives the flys a chance to enter your tank from the dump hookup at the campground.
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Old 08-12-2014, 06:27 AM   #5
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Pour Savin down it
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Old 08-12-2014, 06:41 AM   #6
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Use a coffee can to make a upside down U trap in your drain hose.
Use a Sewer Solution or Macerator pump.
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Old 08-12-2014, 02:06 PM   #7
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If you use a sewer support, like a Slunky, here's a video that shows a creative way to leave your gray tank valve open, but not get sewer flies or odor:

Keep Your RV Gray Tank Open? Closed? How About BOTH?! - YouTube

Of course, that doesn't help with your current black tank fly infestation, but it could help prevent them in the future?
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Old 08-12-2014, 07:07 PM   #8
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Flies/fleas in the black tank

Thanks to all

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