.birds like my grapes before I do. Is there a standard of when to net? my Chardonnay is netted (at 20 brix) and they are pacing up and down that area looking for a way to get in. my Syrah, at 15, is left alone. So when between 15 and 20 to net? thanks Greg P PS: it took three tries to get rid of the yellow jacket nest. got 'em! thanks for the help