We too have used/sale clipper along with Sonar. I no longer sale whitecap (long story) but got prices on sonar close to that of whitecap. SePro is the original flouridone experts. Clipper has worked well to reduce WM abundance but not elimnated WM as is the case most of the time with proper flouridone application. The clipper does well on many things but have to balance the effecitveness with cost. It does cost more than copper for instance to contorl FA. However if you have tried some things and it does not work time to move to something better and clipper might just be the ticket.

Greg Grimes
www.lakework.com