Pill bugs DO & WILL eat small seedlings. I have seen them on my lettuce seedling, had one destroyed by them and had several young marigolds completely destroyed by them. They were in eye sight crawling all over young healthy plants until they destroyed them. This was run as an experiment to see if they would attack young healthy plants. They did. If you have them in large quantities, use soap water ratio 1 tablespoon to a gallon and spray your plants in the soil around them with the soap water. I do this twice a day. It gets into the pill bugs exoskeleton and causes it to suffocate. You do not want to protect the cute sweet little pill bugs if they are in large quantities. They will destroy Young plants.
