Quote:

If you let the lid slam shut it sounds like thunder.

Sometimes the "thunder" originates internally, not externally ;D
A steady diet of simple carbs/chemical additives to increase there shelf life, will often result in the " internal" Thunder ;)

I've never used a privy that wasn't a major fly/biting insect smörgåsbord ( for the bug) :'(

I'll take the open woods/ cat hole anytime.