In the past , video camera inspection of drainage Systems was not available. It was extremely difficult to determine what obstacles and issues lie beneath the surface. This meant that repair technicians would be able to see what is going on without tearing up personal property or having to guess. In some cases, additional damage could occur to personal property because of these crude techniques. With the invention of video cameras that can inspect drainage systems repair crews were able to pinpoint the cause of any issues exactly and get a clearer picture as to the course of action that needs to be taken.