Hello Everyone, I have treated some of my hives with powdered sugar in the past. Using a plastic bottle with holes in the cap, I dusted each frame individually. It is very labor intensive. But at least the bees and the queen remained in the hive. I did try to use a bee blower to inject powdered sugar into the entrance and treat the whole hive without moving any frames. It was extremely messy. My method was relatively ineffective but probably pretty comical. Maybe I should have had someone tape it for one of those video shows :>). I am sure someone could come up with a portable, effective method to quickly treat a hive without tearing the hive apart. I do have some evidence that a screened bottom board may not be necessary as the mites cannot reattach themselves to the bees and quickly die when treated with powdered sugar. Best Wishes Dennis Murrell