Winning the red mite battle

Have purchased some PoultryShield (http://www.microshieldsolutions.com/agriculture/) as the primary weapon in our battle against the evil Red Mite. Last weekend we sprayed the whole coop with the stuff and this weekend, the red mite colony was much smaller, I think we're winning. We sprayed the whole coop again and hopefully, this should only need doing every 6 weeks or so now.