"Tim Watts" wrote in message
...
I've never dared open the inspection cover of the septic tank. On a scale
of 1-10, how bad is the pong, typically?

Having grown up camping where you empty your elsan into a chemical septic,
they're not that bad. "Fruity" for sure.

However, that is one full of Elsan Blue/etc.

I suspect non chemical ones are somewhat fruitier.

I'd have thought that anywhere that you poured away the contents of an Elsan
would be protected by a U trap to prevent the sewer gases emerging at the
hole where you were pouring it.