I need some help with ID on this thing. It showed the first time in about a 6"-8" circle. It looked like a dog ate something that didn't agree with him. It's crusty on the outside and underneath there is a brownish red powder. It's not wet at all and it doesn't leave any mark if it's disturbed. It is showing up at different locations around the turf area. It hasn't affected the other areas yet. Any ideas?