Rinse your sewer hoses when leaving full hookup site?

I've always carried an extra hose for gray water use only...or washing the trailer or car.

I've started using the Sewer Solution and it is just so much less messy. Granted, I would not use it in places that are having water problems as it does use a little bit more water. But, I empty/flush the black tank. Close the valve, open gray tank and drain and then use then flush out the Sewer Solution drain line. Then, proceed to pack everything up in the appropriate storage bins.