We are trying an organic fertilizer on a 3 year old sodded KBG lawn. It has 70% organic matter derived from poultry manure. The idea is to feed the soil so that beneficial microbes come back. But, we have 1/2 - 3/4" thatch and the fertilizer is granular. My question is: will the organic fertilizer break down and feed the soil or will it just stay on top of thatch layer and not reach the soil/microbes? Please let me know. Thanks in advance.