I used to have a job emptying septic tanks... believe me when I say, you don't ever get used to the smell... also two anecdotes about the old septic tanks.... every time i go on an International Scout Camp, the Internet Cafe is next to the septic tank, and its always being emptied when I'm using the computers... and also, on a scout camp a few years back, some idiots had clogged up the toilets with footballs (don't ask!!) and the camp organiser madea speech about it... "We have just had to open the septic tank..." she began..."And what we found down there was not pleasant... " then she held up a football, as the whole camp erupted in laughter....