I have been keeping them off my plants for years with a rather simple technique. I use a small bulb duster and dust the lower stem with a good coating of Sevin up to where the blossoms are. I do not dust blossoms or anything above open blossom area and have had no problem with SVB starting higher up the plant but I don't doubt they can. Every time there is a heavy rain and the Seving is washed off I just walk down the row and dust the stems of course as the season goes along the dusting has to go further up each time. I eventually get sick of squash and just let them go or pull them up but I haven't last any plants to SVBs in years using this technique. The only problem would be a long rainy spell but that hasn't happened so bad that I couldn't keep the Sevin on them but I could see it happening and if it does I might try the BT injections.
Bill
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