Rinse your sewer hoses when leaving full hookup site?

When at an RV park, I use a 25 foot coiled garden hose connected to a Camco Sewer Hose Rinser.

I leave the sewer hose connected to the elbow at the sewer hole. I disconnect the sewer hose at the MH and connect the rinser to it and rinse the hose back into the sewer hole.

I use the coiled (green colored) garden hose so as not to confuse it with drinking water hose. Also, my drinking water supplies and sewer supplies are stored in different bays. I don't co-mingle them.