Composting Human Waste

[Jace]

My wife's extended family out in the boonies all have septic tanks, however I doubt much composting is going on, having seen all the other junk they also throw in (plastic food packaging etc). I've also seen local farmers out there "mining" the public toilets' septic tanks, basically throwing buckets in and carting off whatever they get to fertilise the crops. I've tried pointing out that you should compost it first and use on trees rather than leafy veg, but they dump straight onto the greens without a care in the world.