Stop destructive turf pests in their tracks before they strip your landscape bare. Armyworms get their name because they move in massive, coordinated groups, marching across lawns, golf courses, and crop fields, devouring every blade of green in their path. A severe infestation can turn a lush, healthy lawn into a brown, skeletonized wasteland in a matter of days, completely destroying the foliage and weakening the underlying root structure.