*shrugs* it's just how I was brought up foa!

No there are no lids. Dry cow poop does not stink and neither does dry human poop. It's just one of those things. (and if your poop is watery enough to stay wet and invite bacteria, perhaps you should get checked out for dysentery ?)

I don't like automated things. They don't work a lot of times, or they work too well, and I reckon if we had more germs we wouldn't be worrying so much about super germs after we fail to kill all the weaker ones