I've been running 10-0-20, 10% Fe, 65% slow release now for 3 years. This spring, a couple of pallets were almost black, the color of the material when I opened the bag, and stunk. The properties I maintain are industrial places, where they're not overly concerned about what shade of green the grass is, just that it's green. I use this blend of fertilizer not only to promote root growth, but since I'm also mowing these properties, trying to keep down on the top growth as well. Anyways, after the first round, I noticed you could EASILY tell where I'd ran the PG Magnum with the deflector down, along the edge, there was a trail like the spinner wasn't working at all, just a line everywhere. I've never had that happen before. Yes, I realize technically you're supposed to shut off the 3rd hole, but I was spreading crabgrass control and like to leave that open for extra coverage along the curblines. Anyways, I had decent green for about 2 weeks, and now it's already washed out, much like there was never anything applied. Again, I've gotten no complaints from customers, just what I see. Is it possible that this fertilizer I got is so old that it's already breaking down in the bag, even while it was in storage? It's not damp, no clumps, not sticky. Just black compared to the other 4 pallets I have and like I said before, stinks.