The main drain line in your home is the collection site for all the other household drains. All the waste and debris (hair, soap, food particles, paper, grease and waste) collects here and is flushed out of your home and into the city main line. If the main line is restricted by any of these materials a back up can occur. Routine preventative maintenance can reduce the possibility of a blockage.
Routine sewer and drain maintenance can also help you keep any eye on any potential issues with your sewer line. Minor root intrusion is not uncommon, particularly in communities established 30+ years ago. Scheduled maintenance can ensure that these lines remain flowing freely and, with the use of a camera, can provide piece of mind that your line is intact and damage free.
The truth is, you don't think about your sewer and drains until there is a problem with them...and by that point you may also have a mess to deal with! Scheduling routine maintenance can save you time and money.