Need to replace that old, clay sewer line but your concerned about protecting your lanscaping?  Alot of the time  a trenchless sewer line can be installed and your yard will be saved the large trench in the yard.  There are times, however, when a trenchless line is not a possible option.  When that happens you need the right equipment.  Many companies have very small excavators that dig straight and precise trenches, without creating a large footprint.  When you choose a plumbing company for your new sewer line, be sure they are prepared for all circumstances.  Especially protecting your landscape.  See the photo. Like we were never there.