Just a couple of notes from the last page about septic tanks and trash.
Septic tanks are large enough to fit a body into, but getting it in would mean flushing it down the toilet or squeezing it through an opening about the diameter of a fire hose. After the tank is put into the ground there are only two ways of getting at it without digging the entire thing up and getting large equipment to lift the top half off, and that's the toilet and the risers (where they insert the hose to pump/drain it). The riser isn't that large an opening, certainly not large enough to fit a body through, and if you did (sorry this is graphic) dismember the body to put it in the septic tank, it would muck with the baffles that allow water to flow over and into the leech field which would result in sewage backing up into your home. So not impossible, but not probable.
As for trash, I'm sure he has to make trips to dump his trash because unless he pays for it, he wouldn't have curbside trash pick up. That doesn't mean we don't have trash cans, though. Most dumps have a recycling center and they have different areas for different trash. For instance, you can't put steel or paint, etc in the regular trash, you have to separate it out. You still have large trash cans because you only go once or twice a week, so you don't want a broken bag making a mess in the back of your truck (or even worse your car). So I'd expect to see large trash cans to hold bags of trash and a few recycling cans as well.