Getting tired of all the hype over glyphosate. It is actually one of the safest herbicides out there, and safe for bees also.
In fact for many years I have kept my apiaries tidy by spraying around the hives with glyphosate, which has included getting it on the entrance boards and all over any bees that happen to be flying at the time, does not hurt the bees one bit.
Now that honey will be tested for it I will have to stop using it just incase any might show in the honey, not because it hurts the bees.
All you need concern yourself about Wknz is what they might be adding to the glyphosate. It is common to add a spreader, or wetting agent. What this does is acts like detergent and breaks the surface tension, so that the spray instead of sitting on the leaves in tiny droplets, spreads evenly across the entire leave, giving better penetration and reducing the amount of glyphosate needed in the mix to get a kill. Problem is if bees get the wetting agent on them, it can break the surface tension and spread into their breathing ventricals, and if bad enough, kill the bee by suffocation.
However you are not likely to lose the entire hive, just some feild bees, if any bees at all. More likely no bees at all. And at this time of year the hives likely have a surplus of bees.
Far more dangerous would be any attempt to block the hives, don't do it. Not even with an external screen, an inexperienced beekeeper likely to cause a lot more harm doing that, right up to killing the hives completely.
Just pretend the spraying is not happening, go back and check the bees a week later, and it's strong odds on you will not notice a scrap of difference.
