These guys are free handling bullet ants, harvester ants, fire ants and other insects that sting. They are actually making the insects sting them. An alligator bit the man's arm. They had leeches on their arms and then they did a crab pinch. They did a tarantula hawk sting where someone held a tarantula with some kind of pincers and made it sting the person's arm. They back in Costa Rica where where they did the bullet ant challenge. The ant's stinger did get lodged in the man's skin and he still has the scar. They have been filming these things for 12 days straight and have 15 pieces of material.