Immediately stomp an insect when they see one inside the house. It's like a reflex or impulse and honestly it's kinda scary seeing an otherwise nice person just stomp an insect or spider or whatever in cold blood almost instantaneously. There's like no thought or contemplation, it's just see the insect, and then immediately stomp it.
Like holy shit what did that little critter do to you? Just let it be.
EDIT: Holy fuck the responses. I guess many didn't actually read what I wrote. I wrote that people who "immediately stomp" without "thought or contemplation" have fash tendencies and I get accused of fashjacketing. Ugh whatever. To those who had thoughtful responses (e.g. if you feel something stinging your skin and swat it with your hand, or if you have an infestation issue in your house, etc.), I gotta say those make sense and I hear you all the way (and even in those cases it's not like there's a kneejerk intentional kill response, it's usually accidental or done after careful deliberation). But to the ones complaining about fashjacketing, maybe do some self crit for fuck's sake. You sound exactly like the fucking man vs bear defender types or a white fragility type, Jesus... It makes me actually think you do have fash tendencies tbh.
I do this with mosquitoes. If you think otherwise, please fly up here and take a hike with me without any mosquitoe repellant or long clothing.
Absolute menaces.
The mosquito started it in this case. They are pretty awesome at killing people with diseases, so mosquitoes or things that bite, get into your food, eat your home or will cause an unlivable infestation don't count. That's self defense. You shouldn't take joy in it, but if it's you or them, pick you. Killing bugs just for being bugs is for sure behavior that I abhor and will think less of someone for doing. Houseflies are a medium ground and if they overstay their welcome or get on my food there are grounds for termination. Also they receive no diplomatic protection from my cat that spiders and beetles enjoy.