Bodies do not burn well... Most attempts to burn victims to dispose of eveidence fail. We usually get them with some clothes left, fats, muscle, and organs intact. Often the brain is still viable, if the cause of death wasn't a head injury. Almost always there are fingerprints, teeth, and enough hair left to id the victim.
This I think is the point a lot of people miss about using fire to kill zombies:
We, for the most part, as a community believe that to kill a zombie, the brain must be destroyed. The human brain is pretty well protected, even from temperature extremes, so setting the zombie on fire could take 5 or more minutes before the brain is cooked. Personally, I'm not convinced that just cooking an undead brain would be damaging enough to (re)kill the thing. It will likely have to cook until steam causes the skull to split and allows the fire into direct contact with the brain stem.


Seriously fire is a great way to dispose of bodies, but unless they are dry, dessicated, and drained of blood it takes a fair amount of fuel to completely burn one. Yes, flesh does burn, but it doesn't burn well...Think about it... it is 70-80% water. It takes work, you have to continue to add accelerant or wood, and like any fire... you will have to stir the fuel(body) around so that it all burns. Anyone who believes that just splashing old uncle zack with petrol and throwing a match at him is gonna stop him before he can eat them is setting themselves up to be cooked and eaten at the same time.

The trenches are a good idea, but fire is not...

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