I know this sounds like an EasyGarden question, but since so many of you use DE in your coops, I thought I would try here first. (hope this is the right place to post) Today, I was lifting strawberry runners (rooted in black 4" cups half burried in the bed) and I also lifted a black widow spider with her egg sack with it. I have found many spiders (including more black widows) in my beds. I hate spiders. My question is: Would it be safe to sprinkle Food Grade DE underneath the strawberry plants? Is it good for that kind of pest control?