You can get it at midnightbeesupply.com Super DFM 10, 100, 500 gram or more. Keeps longtime cold.
It is fed dry 1 tablespoon sprinkled on the top bars over the brood.
After it is eaten it activates in the bee gut in a non oxygen atmosphere and helps purge it of viruses and other pathogens.
That was a shameless plug. You can find it at most full line beekeepers supply dealers.
