To get your lawn looking its best, use our Formula 2000 Organic Fertilizers and Organic Lawn Treatments. Dogonit works with Motehr Nature and helps create natural growth conditions which will support healthy new growth. Your natural turf will fill in the spots. No worry about adding a different type of grass, which could rapidly turn a "thoroughbred lawn " such as a 100% blugrass lawn into a "maverick". A lawn that is reseededw ith a different type of grass such as rye or fescue, which do not grow in the same manner as bluegras and could negatively impact the appearance of your lawn.