I was curious of a few things. Do you worm chickens on a regular basis? Or just when you see signs of worms? Same question about mites/lice. I've read about mite dustings that you can use, but was curious if this was done as a PREVENTATIVE or cure? Do I dust my chickens for mites every year or so? Or just when I see signs of mites? What are classic signs of mites? Thanks for any information. None of my hens are sick which is why I didn't post in ER section, if it needs to be moved let me know. Thanks for any responses!