20,000 Bees Followed A Car For 2 Days To Rescue Their Queen – Physics And Astronomy Zone

When Carol Howarth parked her Mitsubishi in the town of Haverfordwest, Wales, to do some shopping, little did she know the mayhem that would ensue.

While she attended to her errands, a swarm of 20,000 bees was drawn to her car. A local man, Tom Moses, saw the buzzing hubbub and concerned that the bees might be poorly handled, called in a team of beekeepers.

“It was spectacular. I was driving through when I spotted the big brown splodge,” he said. “A lot of people were really amazed by it, cars were slowing down and people were taking pictures of it.” “I was a little bit concerned, with it being in the middle of town outside a pub, that someone might do something stupid and get hurt or do something stupid and hurt the bees,” he said.
— Read on science-andinfo.blogspot.com/2019/03/20000-bees-followed-car-for-2-days-to.html

USING OXALIC ACID | Bee Culture

Vapor Treatments
There is much less published literature regarding OA heat vaporization (sublimation) in comparison to the OA trickle method. Research and reports from beekeepers indicate that the vaporization technique does have some advantages. Research suggests it is less detrimental to adult bees, brood and hive strength following application and from the beekeeper’s perspective, there is no need to unwrap, open hives and disturb the cluster during Winter. The risk to the applicator, however, is somewhat greater due to the potential of inhalation of the OA fumes.

European research indicates that when brood is present, vaporization three to four times at weekly intervals in Spring is an effective Varroa control. However, the U.S. OA label does not address this strategy and European recommendations prescribe treatments during broodless periods at temperatures between 35-61∞.

There are two methods used to vaporize (sublimate) OA, passive and active. The passive method involves placing the prescribed amount of OA (1 gram/hive body) onto a mini battery powered heat plate that is inserted into the hive’s entrance. After insertion the hive entrance is closed with foam or a piece of cloth and the electricity is applied. The crystals melt and sublime into smaller crystals that disperse within the hive covering the bees and hive interior. All other entrances and openings such as cracks must be closed or taped shut so the fumes don’t escape and reduce treatment efficacy. It takes approximately three minutes for the OA to sublimate and it is recommended that the hives remain closed off for 10-15 minutes after treatment. There are several passive Varroa vaporizers on the market. Examples include the: Varrox-vaporizer from Switzerland, Heilyser Technology vaporizer from Canada, Varroa cleaner from Serbia and Kiwi Vaporizer from New Zealand. There are other home-made vaporizer designs marketed.

The other method of OA vaporization is the active method in which the OA crystals are heated within a container until sublimation occurs outside the hive. After sublimation, vapor is blown into the hive entrance. These gizmos typically require a heat gun, source of electricity and air compressor for some of the designs. Lega bee supply from Italy markets one of the designs. For some entertainment, do a google search on commercially available and homemade OA vaporizing contraptions. Some of the designs featured on YouTube do not appear to be safe or effective!
— Read on www.beeculture.com/using-oxalic-acid/