Growing up on a farm, we had a few osage orange trees. Every year in the fall, the fruit would start to fall; they were the size of softballs and looked like brains. My grandfather would gather a basket of the fruit and bring it into the house. I asked him about the fruit. He said you can't eat it (and the only critter to eat it is a squirrel) but they keep the bugs out of the house! He said the fruit had a toxin that kept them away. To this day, I go to the woods and gather a bag of the osage orange fruit and put a couple in each room of our house. They make a great Halloween decoration, and they keep the bugs out!