What’s the word on diatomaceous earth and honey bees?
I would not use DE where honey bees are most likely to collect their pollen. Now, the upside of using it on your garden is that when wetted by dew it has no effect on insects, and will wash off in a rain. It needs to be reapplied if you see insect infestation attacking your garden.
One other comment about DE...we use it in our barn and it keeps flies down. Much nicer for the horses. We have one horse seemingly more sensitive to flies and when we see them bothering her we bring her into the barn.