Marco Moretti made a valid comment to the sugar shaker post. It doesn’t surprise me that Antonio Nanetti found checking mite populations besides a real treatment is unreliable. It is many factors making the results uncertain. Why beekeepers want to
Bee shaker
I wrote about counting mites recently. Even if I don’t, others do, and sometimes it gives information that may help you make a decision. John Harbo mentioned when he lectured in Sweden in May 2013 that before choosing the method
I don’t count mites
I know it can be beneficial to count mites. But I don’t have the time. But those colonies I check for VSH, they will get figures enough to get the infection rate for mites in brood. (But I just check