that if all this stuff is pure dehydrated cow manure, the ratings should all be very close. I like cow manure because it is a slow release fertilizer and works great on flowers, vegetables, and fruit trees. Does anyone know of a supplier of this stuff who might ship it to a Chicago area supplier, if I can find one? I also thought about mushroom compost, but that is more directed to soil conditioning, like breaking up clay, and has a lot of other material in it that I may not need. Comments are welcome.