"We recommend you dust in the Spring and Fall. The label for Terramycin has changed to require you to remove the dust 6 weeks before the honey flow . Our Terramycin Pre-Mix is a ready-to go product containing Terraycin, powdered sugar, and soy flour. There are 25 heaping tablespoons per pound of Pre-Mix. Treatment recommendations are 2 heaping tablespoons per colony per treatment. Treat 3 times at 5-day intervals. Please note: This product can not be shipped outside the USA."