I'm starting to spray more herbicides in WDG (wettable disbursable granules) form. How long should I expect it to take them to dissolve. I'll generally pour them into a bucket with some water, and stir vigorously, before pouring into the tank of the boom sprayers or backpack sprayers. (Only one of the big tank sprayers has agitation) I've noticed it takes time for some to significantly dissolve, with some of the granules never fully dissolving. What's the normal expectation here? (So farm using Prodiamine for grasses and SFM for ferns/forest regen)