Unfortunately, septic tanks sometimes end up holding more than household sewage. Occasionally they have been known to yield the bodies of women who have been murdered, usually by very foolish men who think that nobody will ever think to look in the septic tank. Sometimes it might take a while, but eventually, both septic and murder will out.
I had my septic tank pumped out recently. The fellow who did this nasty business for me regaled me with a curious story.
Larry explained that he had been the "star witness" in a few divorce cases. I wondered where he was going with this. This was a surprising thing to say, as Larry fit the image of a man who spent all day with septic tanks, not a star divorce witness. He wore a University of Missouri T-shirt. I had asked him if he was from Missouri, as I've been spending a lot of time there lately. "It's just a shirt," he said sheepishly. He proceeded to tell me how he's come to be subpoenaed for the third time to testify.
Women, it seems, flush things down the toilet that they shouldn't, besides tampons. (Flushed tampons cause no end of trouble to public sewer systems everywhere, because the strings never dissolve and they get entangled in tree roots, causing massive plumbing blockages.) There's something else that shouldn't be flushed -- into a septic tank anyway -- and that's a used condom, particularly one that is being flushed by a woman whose husband has had a vasectomy.
Larry the septic tank hauler has had to testify three times now that condoms, when flushed down a toilet and into a septic tank, will float on top until someone like Larry pries off the lid and reveals more than the usual septic tank contents.