Anybody have a good solution for Ants in the chicken run? I see my chicks eat a couple but man if those things bite them like they bite me, it would drive my chicken mind crazy!!
For ants I use food-grade diatomaceous earth (DE) in the coop and run, but only when the ants are a problem. Have to re-do it after the stuff gets wet. Usually don't have to do it often. The ants get discouraged and forage elsewhere after a heavy dose or two of it. I just sprinkle (okay, dump) a bunch of it along the ant trails and around the feeders. It can be irritating to the lungs, so I only use it during ant invasions. It is much better than using harsh chemicals. Plus the chickens like to dust with it. It helps them keep mites and lice away.
I also use DE in the nest boxes. When I change the nest material I sprinkle a little DE in the bottom of the nest box, add the nest material, then sprinkle a little DE on top of the nest filler.
You don't need much of the stuff. I bought a 50 lb. bag of it a few years ago and it seems like a lifetime supply. The 50 lb. bag only cost a few dollars more than a 10 lb. bag so it seemed like a deal. I split it into 5 gallon buckets when I brought it home so I wouldn't have an open bag spilling in the shed. Darn stuff is fluffy. It filled about 5 buckets. I've only used one bucket in the last two years. And I have about 50 chickens, in five different pens. Your mileage may vary.
Good luck!