Septic Installations. Home › Forums › Archives › Old Bulletin Board Archives › Septic Installations. This topic has 0 replies, 1 voice, and was last updated 24 years, 7 months ago by ben davis. Viewing 0 reply threads Author Posts 11 May 1999 at 9:58 am #282465 ben davis the correct working of septic installations. i need information for customers.what to use for cleaning wc, etc.regards david Author Posts Viewing 0 reply threads The forum ‘Old Bulletin Board Archives’ is closed to new topics and replies.