Plumbing Leaving sewage valve open at campground Archived replied 14 years ago 9 Members · 16 Replies Archived Member September 24, 2012 at 7:38 pm The other downside to the open tank is the sewer bugs. If you have never seen them, they do exist and are nasty. Page 2 of 2 ← 1 2 Log In to Reply Log in to reply. Public All Members My Connections Only Me PublicAll MembersMy ConnectionsOnly Me Public All Members My Connections Only Me Log In to Reply Start of Discussion 0 of 0 replies June 2018 Now