Belt is a chemical called flubendiamide. This is a brand new class of chemical with a unique mode of action. I have a special company write-up about the chemical here (Belt). A unique feature of Belt is its ability to resist rain, or even better said, "impervious to rain." This means that Belt can be applied knowing that rains are coming or at least that is the way I interpret it!
I am putting this product to the test with Kinley Sorrells and a pecan orchard in Comanche County. We will be using it for Pecan Nut Casebearer control this next week (May 10-11) when there is a chance for rain. They have had a little egg lay this past week and so we calculate that entry should begin sometime but mid-week. If you want to know more about controlling pecan nut casebearer read this publications (PNC).