I'm the one who would be answering that question.
The answer to that question is that at this stage we don't know. Right now, we're doing a targeted re-evaluation of all three Canadian neonicotinoids. We released our preliminary assessment on imidacloprid just this past January. As you've pointed out, both Canada and the U.S. showed different impacts, depending on the crops.
That's not because it's a different chemical being used, because in all cases from the imidacloprid it has to do with how the product is being used and on what it's being used, so the differences are not necessarily about different neonics. It could be about what you're treating with. In some cases, those were seed treatments, so again, there's less material out in the open and being sprayed about so the bees get exposed. In other cases, such as tomatoes, with foliar sprays, there is more potential for exposure for the bees while they're foraging. We found during our preliminary assessment that the mitigation measures that are on the label now to protect pollinators from spray drift from foliar uses, such as on tomatoes, are adequately protecting bees as it is.
Next year we'll be publishing preliminary risk assessments for the other two neonicotinoids that are registered in Canada, which are thiamethoxam and clothianidin, and then we'll be able to see whether there's a big difference in risk between those products.