[nordsieck]

> We don't want to get it on us while spraying it, but then we'll eat it and it'll be fine?

I suspect that a big part of the issue is the amount of exposure.

Dental x-rays aren't dangerous to the patient, but they are dangerous to the dental technician, because they're (potentially) exposed to many x-rays every day.

Same deal here - if you consume say... 100 lbs of rice a year that's not that big of a deal. But if the worker is spraying entire fields - they're just in contact with a lot more pesticide. And that's beyond the fact that white rice has the husk removed, etc.