I have been fighting this stuff for a couple of years now. I pick at it and spray it but it just can't seem to get rid of it. I am sure that the seed was a top quality blend with little weed seed. It used to be done with Lesco brand but my lawn treatment guy stopped using them. He seems to think it is some type of Orchard Grass left over from the builder and suggested rounding up the whole lawn and start over. Any suggestions?