Re: How do you KNOW that mites caused the hive to crash?
Sally: Sticky boards are good and they dont kill bees. You will, however, get a more accurate count (assuming your sampling is consistent) with an alcohol shake or ether roll because you physically dislodge the mites and you are working with a finite number of bees plus you get an immediate on the spot assessment without having to return another day. Sticky board counts will vary with cluster size and how active the bees are.
"Ve are too soon olt und too late schmart."- A nameless German philosopher