Wow. Darn. Jebus.
I used to live in employee housing working for an orchard in central Washington state, and roaches were everywhere. You'd go to take a shower, crush 20 on the way to the bathroom, and drown 5 in the water. It was pretty gross. I talked to one of the mexican guys I worked with about it, and he just laughed "Ese, you leave America, you go to Afghanistan, Mexico, you will have roaches. The whole world has them but you".
You learn to get used to what you have to, the guy who posted earlier in this thread who went to Africa is right. Entire value size cans of Raid did nothing to them, I sprayed a big ring of it around the fridge door to keep them out of the fridge, and the next day, sure as heck, there were 40 in the fridge. I remember hitting one with a big blast and it started running. I kept the Raid spraying full bore on it for 20 seconds around the room and finally it drowned in a pool of it.
If you don't have them already, don't bring 'em home. Not worth it