Last winter was a disaster with Foley's Russian Bees queens. I lost 65% of the colonies. I made my own queens last summer and I also used Formic Pro formic acid. WHAT A DIFFERENCE IT HAS MADE! My colonies are HUGE! There is no reason to have Russian honey bees. As you can see, I'm light years ahead of other beekeepers! INDOOR CLEANSING FLIGHTS! THAT'S RIGHT! NOBODY HAS THE AMOUNT OF EXPERIENCE THAT I HAVE! WHO'S INEXPERIENCED?! MUST BE YOU ARE!