I have chickens and fire ants, too. I have found that if I sprinkle the bait early eve. and put some kind of a cover over the mount that doesn't disturb it, such as a milk crate, by morning, the ants have taken in a large majority of the bait while the chickens are busy sleeping. Often, they don't look under or through the crate and it stays undisturbed long enough to kill out the mound. Upside down 55 gal drums work well, too for the larger mounds. Found that the Greenlight product with Spinosad works very well and with the rain we just got - those little mounds will be popping up everywhere so its a great time to get this product out.