The Georgetown has check valves on the hose connections so it is a tough chore to force bleach thru them. I pour the bleach into an EMPTY fill hose, connect to water supply and fill. That method also sanitizes your fill hose.
In addition to when I begin camping, I sanitize mine in the fall before winterize and then drain the tank for winter. Keeps any loose bugs from growing during storage.
Life is a journey, not a destination.
2005 Georgetown 359ts
Bill & Virginia, Kentucky
Nights camped in 2011...78 , 2012...73,
Nights camped in 2013...123, 2014 ...101