Not being an organic chemist or weapons expert, I don't know whether TEPP has some property that makes disbursal by artillery shell (or bomb) infeasible, but I sure as heck don't want an al Qaeda cropduster loaded with the stuff anywhere over the US. I searched the ISG's public report and it didn't mention pesticides except in the context of discussions of the Iraqi chemical industry.
I've been wondering ever since whether, as the suggestion in this post has it, the Ba'athists just stockpiled chemicals which could be used both as CW agents and for other purposes--not dual use technology, dual use weapons.
Good point...in addition to the traditional dual use nature.