I'm a homeowner with a question on the 0-0-7 Pre-M..... Is it really safe for southern turf (centipede)? I thought I was getting atrazine, which I know is safe on centipede, but instead it is pendimethalin. I don't know if pendimethalin is more or less safe for use on southern lawns. Is atrazine (0-0-7) actually the better product to use on centipede? Thanks in advance for any responses and info.