I got a clog in my main sewer line a couple weeks ago and my landlord sent out a plubmer to clean the clog, it lasted a few days then closed right back up. I went out side and found a hole in the yard where the plumber had dug. I found a black rubber sleeve in the dug out hole and a hole in the clay pipe. I called my landlord and told him about it but he said the plumber put the hole there cause he couldn't find the clean out on the house. My question is would a plumber put a hole in the pipe to clean the system, and if they would then would they also just lay the pipe sleeve on top of the pipe and cover it with dirt?