When we bought our house it became obvious rather quickly that we had a problem neighbor. Her property abutted ours at the back fence and she would throw her weeds over onto our property. I asked her politely to stop to no avail. She had also plumbed her washing machine from the garage through PVC piping that ran under our fence and over our property. Once again there was no reasoning with her as she told me she had lived in her house for over 20 years and we would just have to put up with it. Yes, I know I could have called the city to get it stopped but didn’t want to start an outright war in our new neighborhood. I got myself a long 2x2 and three lovely large Idaho potatoes and rammed them way up that drainage pipe. We all know what happens to potatoes in a dark, damp environment and I didn’t have to wait too long to know if my rather mean solution worked. The neighbor next door to her that was friendly towards me stopped to chat one day. He said “Poor Carol, her washing machine backed up and flooded her garage and when she called a plumber he told her it had been plumbed illegally and he had to replumb up to code; it cost her a lot.” “Oh what a shame,” said I and really had no guilt, or no more problems with her either.