What is the latest and greatest chinch bug treatment for St Augustine these days? I tried Cyonara (and peat moss because I wasn't sure if I also had a fungus issue) maybe 4-6 weeks ago. Most of the yard is looking much better, but I still have some spots that started to recover and never made it back. Those spots are getting worse again.

Is there something bigger and badder? No pets or kids to worry about, and I don't mind if the yard smells like napalm for a few days. I just want the lawn to look good.

I used Bifen on my lawn last year for a spot with Chinch Bugs: https://www.domyown.com/bifen-lp-insecticide-granules-p-227.html

Bifen Granules ; drop the tailgate and load up a few bags