Brand name available: Fumagilin-B®
Active ingredient: “Fumagillin” (Bicyclohexylammonium fumagillin)
Fumagillin is available in a variety of container sizes, depending on the brand name; therefore always follow the product’s label recommendations. As a general guideline, 1.0 g of fumagillin will provide enough antibiotic for treatment of approximately 10 spring package colonies or 5 wintered colonies. Refer to product labels for instructions on specific product use.
Important: Medicated syrup is best prepared at a concentration of 25 mg Fumagillin base per liter of syrup, usually a 2:1 syrup (two parts of sugar to one part of water). The water may be warm (20-50oC).
Fumagillin Preparation by Bottle Size Will Provide One Treatment For
Mix 0.5 g (small bottle) in 20 L of syrup 6 spring packages or 3 wintered colonies
Mix 2.0 g (medium bottle) in 80 L of syrup 21 spring packages or 11 wintered colonies
Mix 9.5 g (large bottle) in 380 L of syrup 100 spring packages or 50 wintered colonies
I have the Medivet sheet in front of me , and its the same as Ernie posted earlier.
As for a drench, for many years I have sprayed our bulk bees down with a garden pump sprayer ,using a thin enough syrup to go through the sprayer, at the normal 'tsp per gallon of fumagilin' rate. Thats when installing. Then a gallon of fumigilin syrup is a good idea.
Here a quick and dirty way to do a lot of hives: http://i21.photobucket.com/albums/b278/loggermike/000_1536.jpg
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