I quit knocking down their dirt tunnels because Jon read online that these wasps rarely sting and are actually welcomed by some people because they control spider populations. (This is kind of gross/cool. They apparently kill the spiders and stuff them up in the tunnel with their eggs before sealing it closed. Then, when the eggs hatch, the little wasplings feed on the spiders inside the tunnel.) Anyway, it appears to me that the spiders have multiplied dramatically since I left the wasps alone! I count 5 in this picture right next to the tunnels without even looking closely!!
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