It is sad to read on this from that new beekeepers are encouraged to try the most unefficient methods to handle varroa.
There are official recommendations what to do to mites. It means that great efforts have made in Europe and in USA
on industrial level to avoid disasters of varroa. I had no intention to write any more here because it seems to be vain here but I cannot sleep when I read these writings.
I myself have made big effort to copy and paste and teached European methods how to live with mites. It is easy if you use good methods. It is sad to read that "best" recommendated methods b*.* here, and grandfathers out of date ideas are best currency here.
Sugar shaking is one how it is offered here. " Do nothing " is another why I loosed my mind with these shamans. Some one wrote:" Start to sugar shaking when brooding has started in the hive". - What a mistake. When mites are inside brood cappings it late to start conrolling.
1) What is the meanging to give sugar bath to the hive every second week? Never heard that. At least I have not seen recommendations.
2) Sugar does not kill mites. It is only checking mites. To calculate mites all the time helps nothing.
3) How do you shake hive every two week if hive has 6 boxes? - Its is easy. You never will have so big hive if you disturb all the time hive with all kind of tricks, even if they are official.
If you have handled broodeles hive in winter, you need not give any handling before next winter. Counting mites:
Usual way to count mites is follow naturally dead mites under screened bottom. You need not shake bees with sugar.
You really have "best practice" recommendations. It is easy to follow them. It is catastrophy to beginners if first year beekeepers teaches they odd tricks. Mite control is serious matter and not a place to invent your own wheel. Even if you try tricks in your on hives, you should not teach what ever to other beginners which have not basic knoledge to choose. Even if it is nice to change opinions, it should be some responsibilyty what kind of knowledge you offer to other beekeepers in internet.
If you are afraid of chemicals, here is totally sugar and chemical mehtod to clean 95% mites from hive. Spring and summer is difficult time to cure varroa because mites are mostly under brood caps. http://www.xs4all.nl/~jtemp/dronemethod.html