Howdy. Did a search on this topic found nothing. perhaps different wording would help. Best way to clean out the sewer hose? Bleach? Soap and water? Advise please. Thanks!
As said above, don't make it more complicated than needed.
Dump black first, then dump gray which is basically a lot of water, waterever you put down your sinks and some soap if you are using it while showering or washing hands. With bleach being hard on plastic, see no need to introduce the two. If still concerned, refill the gray tank with water and put a little dish or laundry soap down the sink and give it a second rinse from the gray tank.
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