Part 1.
http://youtube.com/watch?v=gMaDUFgxbgk
Part 2.
http://www.youtube.com/watch?v=akQBFLLq0Kw

Off day, 3-4 wipes, good day no wipes, average run 1-2 wipes with second group farming.

Primary group, 1-2 wipes at most on average.