First, apparently there are no (absolutely none)gardening stores that carry any insecticidal-soap..? (I’ve checked 5 major stores).
Second, would your ‘home made’ insecticidal-soap work on Chinch bugs in my lawn? You do mention several insects but did not mention Chinch bugs.
Best time to apply [morning, night?)
Certified GKH Gardening Expert
Yes, horticultural soap will help with Cinch bug control.
Here is a link with more information: https://www.gardeningknowhow.com/plant-problems/pests/insects/chinch-bugs-in-lawns.htm