I did a sugar shake on both of my hives on Sunday. I put an aluminum tray under each hive with oil in it to keep whatever fell in it from getting away.
The shake was funny - first I didn't know what kind of powdered sugar to buy and since Michael and Brian each said, "IMO powdered sugar is the best..." I went online to find out what IMO powdered sugar is ..... duh,,, I finally got it that you meant "In my opinion," so I bought Dixie crystals powdered sugar 10X and sprinkled it on both hives.
One of my hives had a lot of robbing after the sugar shake - not from other bees but from yellow jackets and bald faced hornets. When I pulled the tray out the next day, there were many dead bees, yellow jackets, and three bald faced hornets. I didn't see many mites - about six in that try and 5 under the other hive's tray.
I am still going to repeat the shake in 10 days as per this thread, but I don't think I have much of a mite problem. I do have small hive beetles and both hives are armed with Brushy Mtn's cider vinegar trap - we'll see how that works.
Linda T fighting pests in Atlanta