Confession: after cleaning up beer fermentation disaster, I have decided I will have to think twice about murdering anyone.
Too much cleanup afterwards, I am not really up for that.
Tarps and tape are cheap. If you're going to kill someone I'm sure they won't spontaneously explode when you don't expect it. I'm sure you'll plan out where you will kill them and an therefore plan cleanup before you actually kill them. Otherwise you'll end up on some tv show about how people ALMOST got away with it.