I have a heavily shaded front lawn and since we moved in last summer I've struggled with thickening it up. I was skeptical of this product and tried the 4lb jug. I found it difficult to spread 1/16-1/8" thick layer as suggested so I did a little thicker, using the entire package over a roughly 3x5 foot area. And I was AMAZED at the results. Keeping it wet as directed I developed a very thick 3x5 foot area of grass! I've since purchased more and in greater quantities to fill in the thinner patches in my yard. This product is very easy to use. And as a nurse I get too worn out to mess around with yard stuff so this product is perfect for me. Scott's has a no-hassle guarantee so there's no risk in trying it out on your yard. I highly recommend!