How would you dispose of the remains?

@Jackal it may be dug up sometime in the future

@Jackal add alot of sodium chloride and we may have the perfect answer!

well it depends but if you are really not sure of the safety of the grounds you can always burn it nothing is left behind , i know you will wonder how buy an old wood heater for your house, if you live in a farm well 5 hungry pigs will go through a body in no time and don't take advise on murder from the internet your ip will be monitored for a while

@Jackal home in the city.. neighbors will think bar-b Q