I went out last weekend, into areas that showed a lot of sign, and near areas that I had called them in with a lot of success the week prior. The area showed a lot of sign and a lot of good cover. 7 stands and I only called one coyote in, and no signs of foxes at all. The coyote came in about 9am, meanwhile a friend sent me a pic when he called one in on the far side of the valley, at about 830am. So, yes it seems to affect them, but not really sure why.
