I just overseeded(10 days ago) a large bare spot on the back of my lawn. I covered the grass with a layer of wheat straw.The grass germinated in 4 days(due to warm temps here in NC), however I have lots of clumps of wheat growing among my grass. I'm bummin' big time. How do I get rid of the wheat? It's almost too much to hand pull. Will Weed-B-Gone work? Thanks in advance for your help!!