I've seen and used many soil amendments through out the years, and have found Revive to the best for my type of soil. Clay is so wonderful here in the Midwest, with the hot dry summers it just helps with poor lawn performance. I like to water it in about a inch when temperatures are above 90 degrees. The iron in the product really helps green the lawn while the Dehydrated Poultry Waste does its magic. here is a link below. If you do use it let us know what your results were.