The problem sometimes lies in it becoming airborne. So your chickens roll around in it, dust gets carried by a breeze to the flower patch, the dust settles on the flowers, which in turn effects the bees. I personally choose not to use it. But you are correct, it isn't a poison. It all comes down to personal choice.DE isn't a poison or anything, don't sprinkle it where the honey bees frequent and it wont harm them.