Thatching a lawn requires utilizing a thatching rake to comb through the grass and weed out dead, unwanted material. Thatch a yard every other year or so withadvice from a professional landscaper in this free video on lawn maintenance. Expert: Dan LeSieur Contact: www.dklesieur.com Bio: Dan LeSieur performs both residential and commercial work, specializing in landscaping, painting, home repairs, remodeling and corporate re-imaging. Filmmaker: Lisa Fenderson