Does anyone have any experience of septic tanks?

When I was married, we had a septic tank and over 18 years it gave us trouble only once and that was because they need pumped out every ten years or so and we didn't know that. Our kids got a big kick out of the whole process! The important thing about a septic system is to watch what you put in it! Once or twice a month you should buy a septic treatment--it contains healthy bacteria in granular form that you flush, it goes into the tank and grows, feeding on the waste down there and breaking it down so that everything stays liquid and leeches down into the ground. Don't flush hygiene items down the toilet or put egg shells in your garbage disposal. That's really the gist of it. It's a living waste system that needs some maintenance every so often and some care but it's no big deal.