The past 2 weeks it seems we are being overwhelmed by flies. Was bad in the barnyard but now they are getting in the house from all the pets going in and out all the time. Just hung up a third fly strip and have them on the list for tomorrow when I go for feed. I have been trying to spray the cows but they are real spooky about being misted with the equine spray I have from when we had mules and horses. Might have to hang some of the traps I used in the old barn. I can't spray in the house because of the birds or I would fog the hell out of them.