I'm not sure what an infestation looks like, but there's ants and spiders and cockroaches and wasps and bees and all sorts of other insects in the yard all the time during summer.
Have you ever eaten your banana, threw out the peel, got distracted by some bullshit during your meal, then started looking for your fucking banana like a crazy person?
Have you ever been accused of being a specific troll, resolved that you're not that person, then proceeded to troll them, because "fuck you for wasting my precious time" which I haven't had any use for anyway at that particular moment?