Additives for Grey Water Holding Tank

crcr wrote:

IAMICHABOD wrote:

crcr wrote:
We don't smell any odor inside the TT from the grey water tank, but when I dump it, there is a noticeable odor, even though I have been using the Grey Water Odor Control (lemon smell or some such). The odor when dumping kind of surprises me, as 1) the wife doesn't put greasy water or water with a lot of food debris down the sink, and 2) we always dump the tank right after camping for 4 or 5 nights.

I would check and replace the air admittance valves
located near your sinks,they are cheap and can be found at most big box stores like Home Depot and Lowes as well as smaller hardware stores.

If they fail they will let the smell from the grey tanks in and believe me they can smell just as bad as the black tank if not worse.


Changed mine out and the smell was gone!

We NEVER get any odor inside, only outside, and then only when dumping.

Perhaps I'm missing something here, but if you never have an odor problem inside the trailer, and the only time you have an odor is when you are dumping, why do you care? When I dump, I expect to have some odors. After all, it is sewage going down the line.