Hello, I had to add a bunch of topsoil to an area of my front yard last fall to fill in and area that had settled over the years. I re-seeded the hell out of the area and for the most part, it has come in nicely. However, there are clumps of, what appear to be, K31 scattered throughout the area. I am wondering what the best method is to deal with these clumps and the best time of year to do it. Each clump is the size of a baseball of softball. 1. Hit each spot with roundup and re-seed a few months late. 2. Dig each spot up, refill with bagged black dirt, and re-seed. 3. Pull up each area the best I can by hand and just overseed the hell out of the area. Thanks for any advice.