Let’s be honest. We don’t care about precise scientific efficacy. We want a fun trick to feel in control. Spiders are creepy. They move fast and have too many legs.
Vinegar makes us feel like kitchen-sink wizards. “I’ll just splash some acid on those eight-legged trespassers!” It’s satisfying. It’s primal. And it smells like pickles.
Funny detail: some people use apple cider vinegar because it smells nicer. Does it work any better? Nope. But at least your house smells like a salad dressing instead of a science lab.
Another odd fact: spiders can hold their breath for hours. So drowning them in a vinegar spray doesn’t always work. They just sit there, silently judging you.