I created a "Back to Eden" garden about 5 years ago using wood chips as my mulch. I have loved this type of gardening, but this year I have had an epidemic of roly poly bugs (aka potato bugs or sow bugs) in the soil. They have destroyed most of my potato crop along with a lot of other plants and seeds this past summer. I want to keep my garden organic. I have researched what to do and have determined that Neem Oil is probably the best thing to use, but I don't know if it will penetrate into the soil. Can you give me any advice? Thank you!