An export from US EPA OPP Ecological Toxicity database (distinct from EcoTox, and based on data submitted by registrants) with LD50 values for all registered pesticides (insecticides, herbicides, fungicides, etc.) for which there are data (attached). This database hasn't been updated by the IPM Centers (who host it) since 2011, so the new ones are missing, but you can get a feel for the numbers of pesticides that fall in the category of highly acutely toxic.
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