Flies/fleas in the black tank

[Nxkharra]

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?

[DieselTech39]

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.

[J Birder]

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,.

Joel

[mojoracing]

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.

[Tha_Rooster]

Pour Savin down it

[Triker56]

Use a coffee can to make a upside down U trap in your drain hose.
Use a Sewer Solution or Macerator pump.

[bcbounders]

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?

[Nxkharra]

Thanks to all