Simple instructions that don't involve compass directions:
You are on a road when you come into the logging camp right?
After you are told to go kill the wasps, simply get back on that road and keep going in the direction you were going when you came to the camp in the first place. (The road winds around below the camp. There are two offshoots from the road on the right side of the road that take you back into the camp. Don't take these, stay on the main part of the road.)
The wasps are three screens away from the camp on this road. On your way to the wasps, if you leave the road to look around, (hint, hint), just get back on the road and keep going. At the end of the road is a partially built bridge. When you reach the bridge, you should have killed at least 9 of the wasps. You may have to hunt around a bit for the tenth wasp as it is not always present at first but won't be too far from the bridge when you do finally encounter it.
Hope this helps you and others find these guys.
A little warning, the wasps will sometimes swarm you, I have had as many as 5 jump me all at once, but usually it is one, two or three at a time.
It's also fun to not kill the last one and go back to the camp and tell the guy you did. You get a taste of Beenox/Ambrosia humor if you do this. Then go back and kill the last wasp.
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CRH