Tiny flies exiting the black holding tank to...

[jsrang]

In our '05 3650 RK, we have just started noticing tiny little flies coming up from the black holding tk through the "you know where". We have always used Aqua-Kem deodorant, and never had this problem before. Anybody had this problem and what did you use to eliminate it? We are in Florida for the first time this late in the season (May 31), but I would have thought that the deodorant is designed to prevent this problem?

[AZCampinfool]

This is probably stating the obvious, but it sounds like a good flushing/cleaning is in order. This is also the reason I just installed a black tank flusher in our new Mounty. Sounds like the little buggers have laid eggs and new ones are hatching. I would completely fill the black tank with a solution of water and bleach. I would think that would kill anything that is down there. I would also get a clear extension to go on the dump valve and then flush everything out. I would do it over and over until just clear water was coming out.

[jsrang]

Thanks. I'll give it a try. I had not thought about a bleach flush.