As above, milorganite is basically Milwaukee sewer sludge. Ever wonder why it smells so bad?
Milorganite doesn't smell bad. In fact once on the lawn I think it smells good. Reminds me of a cool morning on Dretzka golf course when I was young. That's a Milwaukee Co. Parks golf course near where I grew up.
I assume they got Milorganite on the cheap.
And Milorganite is great fertilizer. You can't really over apply and it doesn't burn or kill whatever you are putting it on like most if not all, chemical fertilzers.
And in reply to OP. Raise your mower! I cannot believe how many of my suburban neighbors destroy their lawns trying to make them look like the greens at CCI. Your lawn should look like the rough at the US Open. 4 - 5 inches tall. It will crowd out weeds, hold water better, tolerate heat and dry better and not need as much fertilizer.
It will take a while to fill in but just keep cutting at that height. My lawn isn't big so all I need is a walk behind. And it is always set on the highest setting until the last couple of cuttings in late fall.