West-Central IL | http://entomology.k-state.edu/extension/insect-information/stored-grain/options.html
"Liquid formulations of malathion are being withdrawn. Current stocks, with the correct label may be used until the stock is exhausted. Apparently some dust formulations still available. Products not labeled for application to stored grain should not be used as top-dress treatments. " I could not find a date on when that was published but I think it has been "withdrawn" for several years
http://www.sites.ext.vt.edu/newsletter-archive/cses/2005-10/grain.h...
"6% Malathion Grain Dust (malathion - various products) is labeled for application to wheat, corn, oats, rye, and barley. Only the dust formulation is labeled for direct grain applications! Due to resistance problems with this active ingredient and concerns over residues in flour, malathion is not suggested for direct applications to stored products."
Edited by mohr-power 7/20/2016 16:50
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Treating Corn going into bin
