Now that diazinon is being fazed out here in canada it seems only sevin is left to use. How effective is it in controlling chinch bugs? We are still permitted to use and purchase commerical class diazinon this year but it seems to already be sold out everywhere, leaving us with what diazinon we have left and then turning to sevin. So having never used it, but hearing nothing good about it, i ask your professional opinions. P.S. Any canadians know where to find some commercial class diazinon?