Hi Cheryl, hope this helps! https://www.doityourself.com/stry/how-to-make-a-homemade-roach-killer
Something as simple as soap and water can be a very effective killer of cockroaches, although it won't eliminate the nest. This just kills the roaches it reaches. Pour a cup of water into a spray bottle then add one teaspoon of liquid soap. When you see a roach, spray the mixture on it.
Here you go: https://www.hometalk.com/43527424/homemade-roach-spray-good-for-ants-and-other-bugs-too
Hi Cheryl: Here are a couple of sites that may help: