My name is frank and I have a lawn question. I have a large lawn which is sod in the style of Kentucky blue grass. I just treated with step 2 scotts lawncare and it rained heavy for like a week straight. For some reason there are yellow/light green streaks in my lawn which are appearing. I need some advice if anyone can help. Thank you.

It sounds like you were overlapping too much; the yellowing being where too much chemical damaged the grass. Hold off on further treatments for a couple months. I think you'll find that the color evens out by then.