Fence off the area your husband has contaminated. It's illegal to do what he's done, by the way.I am so alarmed right now. My husband loves rescuing old decrepit tractors. These and other various farm equipment spring hydraulic leaks all the time, and all over the place - often in close proximity to the run. Empty buckets, still with a coating of fluid, are in a pile by the barn or at the water hydrant at the chicken run. The gravel in front of the barn and a patch of dying grass near the run are covered in fluid. I've seen our chickens foraging in all of these places when I let them out. Since I haven't had any birds with these symptoms, I can only assume they're extremely lucky. I will clean up the buckets, but there's nothing I can do for the gravel and other oily areas. In addition to our resident fox, just another good reason to keep them penned up and never free-range again.![]()