I could have sworn I dealt with these guys in Costa Rica when I lived there, in the Guanacaste area. The ants were way bigger, though, and only a certain percen

I could have sworn I dealt with these guys in Costa Rica when I lived there, in the Guanacaste area. The ants were way bigger, though, and only a certain percentage of the ants that flooded into our house at night had that crazy, irratic movement, but I had never seen anything like that before. They only came in bunches at night for the most part - getting up to go to the bathroom at night, you'd have to watch your step for sure, though the ants were pretty cool about leaving once you got there. It was definitely something we had to get used to, but after a couple months it was almost like we just had ants as an extra roommate who helped clean out the bugs in the house at night. It was quite a sight to see the `crazy` ones - they literally looked as if the some predator injected a toxin into them that was eating away their brain, causing them to frantically dart about in weird directions. I couldn't imagine having these things infest my house and crawl all over my feet during the day.