Grey Tank Smells

[KSRToLife]

First what we have already done…

1. This is a 2021 Fuzion 427 Toy Hauler that we have lived in Full time since May.
2. We always close our grey, let it fill, then dump.
3. We are careful with food. Use only Dawn dish soap, and use Happy Camper in the grey tank.
4. Pea traps appear to be intact. Including the shower. I can see water in the drain.
5. We have “cleaned” the grey by rinsing several times and the water is clear.

Still we have grey tank odor. We are new to this, so please me gentle. I’ve searched the boards but can’t seem to find a solution.

Help!

[markcee]

A possible culprit is the Air Admittance Valve (AAV). Do a forum search for that term or a Google search that also includes the words 'Keystone Forum'.

[flybouy]

I'm guessing your unit has 2 gray and 2 black tanks. How are you determining where the odor is comming from?

[Brantel]

Strange, when we use Happy Camper, there is basically no odor from any of our tanks.