Ok, so today a man came and threw down what he calls weed killer granules I'm sure there is an actual name for them but I don't know it. Long story short, my chickens (7) got out and I do believe all if not a few ate a few pieces of the granules. Can someone help me. Are my chickens going to get poisoned now? Will they be ok? What signs should I look for that indicate sickness? PLease give me any advice you can. I'M PANICKING!!