>>504062this
They only sting when you're actively trying to kill them and have missed a few times, and even then it's just a painful little sting, nothing to worry about.
And they gobble up everything else that could annoy you. From cockroaches to flies to spiders to everything else. All for the price of occasionally seeing one chilling in your wall.
Don't kill them. If you're not too keen on having a chill as fuck creature, at least release it outside.
Also, thanks google for this captcha.