Just laid down some bermuda sod and it looks great for the most part, but I'm trying to figure out what these random brown spots are. There are maybe half a dozen of these over 1000 sq ft. I thought maybe they were spots where there were ant piles that I had washed out by watering, but I can't recall for sure if these particular spots were where I had them. I was told to wait 3 weeks to treat for ants/pests, which I have now done. Thanks for any input!