I set up a dumping ground where I gather all the corpses. Either surround it with stone walls and/or concrete floors and colonists will gather corpses there. I don't bother with stripping the corpses and I'll only make sure to gather any guns above normal quality.
After all the corpses are gathered just toss in a molotov and let them burn. Make sure the corpses dumping area isn't in your home zone.
After all the corpses are gathered just toss in a molotov and let them burn. Make sure the corpses dumping area isn't in your home zone.