I learned something this summer.
I have lived in my current apartment for 10 years and, during the warm months, I have always gotten a lot of big ugly spiders that come out at night on my balcony. I don't like spiders. I can handle the little whispy ones but the big bulbous ones give me the heeby jeebies. But I always figured it was an impossible problem. It's outdoors - yer gonna get spiders.
I kinda figgered if you killed one, another would come along to take its place. So I did nothing and just accepted it and lived with the creepiness.
What I learned this summer though is that they do not get replaced immediately. In fact after killing a bunch of them (about 6) at the start of spider season, there have only been maybe 2 that have come along in months.
So the lesson for today is, if you kill a lot of spiders, there will be less spiders.