After noticing how much it improved his own health, B Wrangler tried it on his bees:
In the early spring, I grade my hives strong, average, below average, weak. This year, I sprayed the below average hives with slightly diluted, about 30%, solution of overly ripe kombucha. It was probably about 3 weeks old.
The spraying was done incidentally, without any planning, etc., just to watch the initial reaction of the bees. After spraying, the below average hives were left alone, without any additional manipulation or observations.
The kombucha worked better than smoke for controlling the bees in a normal situation.
To evaluate the yard’s progress, I’d pop the covers off a couple of strong hives and a couple of weak hives every few weeks. Ten weeks later, I popped the covers off the below average hives and found they had a full super of honey, while all of the others, even those with larger bee populations had none. In fact, they hadn’t even entered the supers.
I was quite surprised to say the least! And I’d had forgotten about the incidental kombucha spraying until looking at my notes a week later.
This reminds me of the turning point in the discovery of Vitamin B1. Experiment 2 done by Christiaan Eijkman gave results opposite to Experiment 1. Eijkman was unaware, until he looked into it, that his chickens, the experimental subjects, had been fed different rice in the two experiments.
Thanks to Heidi.