When you discover a revolting cockroach in your home, an instantaneous response would be to either start spraying bug killer all over or call Go Green Pest Control. Cockroaches are fiddly little pests and its most likely that you spraying them will have no effect. Why you ask, well here is why: they have become immune to most pesticides, if need be – they can hold their breath for a long time so spot spraying doesn’t work, and they can live off of eating anything, including paper, hair old skin dander etc.
https://gogreenpestcontrol.ca/roaches-just-say…-most-pesticides/
https://www.linkedin.com/pulse/roaches-just-say-most-pesticides-randy-bilesky/?published=t