Thank you, that's what I thought but just wanted to confirm it.

No problem at all. Note - if your weed b gone is a granular then the weed leaves need to be wet so it sticks and dies, if its liquid spray away.

Why Ironite? A 40lb bag of 1-0-1 Ironite contains 4.5% iron. That's 1.8lbs iron, 0.4lbs nitrogen at a cost of $18. A 50lb bag of 5-2-0 Milorganite contains 4% iron. That's 2lbs of iron and 2.5lbs of nitrogen (60% of which is WIN "organic" which will promote micro-organisms and a healthy lawn) at a cost of $16. At the Ironite recommended application rate of .45lbs per 1000 sq ft., it will cover 4000 sq ft. At that same .45lb rate, the Milorganite bag will cover 4400 sq ft. plus you get all of the additional nutrient advantages. Home depot sells 40# bags of Ironite in my area for $18.67 and 36# bags of Milorganite for $12.37 (which is highway robbery). Even so, you are paying 10.37/lb of iron with Ironite and only $8.59/lb of iron with Milorganite. I have never watered Milorganite in and I regularly spot spray with WBG with no issues. Something to consider.

I just applied it to my yard. As others have said, not to late, apply at least two days after mowing, use a surfactant, wait at least two days to mow. After day 1 I could see the weeds already wilting. You just don't want to apply it over 90 degrees