That.
And Tiger pits. Punji stakes. Razor wire. Lots of it. Machineguns. High voltage. Big, nasty dogs. Armed drones.
I’ve got old Comanche foot traps all over my ranch from where they camped. Basically a foot-sized three-foot hole with spikes. Most have filled in, but occasionally a cow or an oil field worker will find one (generally when laying guy lines before they lay a pad).
Pretty much a guaranteed lost foot, assuming prompt medical care. Much worse if you don’t have a crew around you with a van and a radio (and a safety kit with a tourniquet).
I suppose one could never tell how long they’ve been there.
Stop messing around. Vlad Tepes knew how to deal with enemies. Impalement.
https://www.youtube.com/watch?v=1OH9YH2alFA