Neighbour's kitchen drainage pipes routinely fall apart emptying a few loads every day of dishwasher, washing machine, kitchen sink water onto a paved path in their garden. The water floods their path and lays against our garden wall and is no doubt causing some damage and is certainly eroding the mortar. This has been going on for a few years and I have grown weary of politely asking them to reconnect their pipes and receiving the associated curt responses. Some how I need to protect my property and the first line of protection of my garden wall.