The ultimate roto brush!

I came across the ultimate roto brush! Look at the motor on that thing!!! Now if we could train the cows to use it 

That sure looks like one happy cow!!!

Those things are amazing...lots of large dairies use them.  Robotically controlled and will stop spinning when the cow walks away.  When they walk up to it, it starts spinning and moves around their body.  I've seen cows stand in line for their turn!  Bad thing is, it's designed to take all the old dead hair off, so most dairy cows are slick haired above the hock.  If that is what you are wanting, it will work wonders...