I had a PO box that I kept for my side business. Never really used it other than to have it as my address, but I received so much junk. I had to go in and clean

I had a PO box that I kept for my side business. Never really used it other than to have it as my address, but I received so much junk. I had to go in and clean it out every week. If I didn’t, I’d get notices from the post office. I finally asked them stop putting in all the junk in my mail box. They said, I’d have to call them individually to stop. That’s when I realized, the post office actually makes money from doing this so they have zero incentive to stop.