I use DE on my tomato plants and it kills the tomato worm. All that is left is the skeleton. I also mix it with wood shavings for the hens. So far they don't seem affected.
I buy DE at the pool place. I think I paid 15.00 for 20 lbs. I sprinkle it with the wood shavings. It also dries up the poo and makes it easier to clean.
