If your lawn is reasonably healthy and is only in need of a boost of general vitality and color, then we recommend NOURISH-BIOSOL at about 8 to 12lbs per 1,000 sq ft. If your lawn suffers from pests, disease, or drainage problems, we recommend BLEND at about 25lbs per 1,000sq ft. Right over the top of BLEND, apply PENETRATE Liquid BioTiller at about 8oz per 1,000sq ft. These treatments should be repeated, at least, every 6 months. Apply more frequently if turf color becomes an issue.