Treatment of Honeybees with Oxalic Acid

just watched "Researching and marking of a queen bee".Incredible! No gloves - picking out queen bees and holding them between finger and thumb and marking them! No stings? Unbelievable and the birdsong in the background is a nightingale I think.
recommended as worth watching,
Jenny

Have just watched the first 2 vids. This varroa mite is doing srious damage to all bees throughout the world. Without bees, 2 out of 3 mouthfuls of food that we eat would disappear, resulting in mass starvation. I didn't realise they were so vtal to the maintenance if our planet.