They're very common here in the Kali desert....these people are using the wrong stuff; "Demon" (a powder to mix with water) offs 'em within seconds....and a direct hit isn't necessary, as is the case with the likes of Raid.
Brake or carb cleaner zaps ‘em pretty good as well...when our son was a toddler and played outside regularly, I’d go out about 2x a month at night with a flashlight and my weapon of choice and zap about a dozen or so that had set up residence in his Tonkas, tricycle, etc...persistent critters.