A main line stoppage is one of those plumbing problems that just can't wait. When you call a plumber to clear the stoppage they will typically ask if you have a clean out. The cost of the service call will be determined in part by your answer.
Do you know if you have a clean out? To determine if you have a clean out it may be helpful to know what it looks like and where they are typically located.
What A Clean Out Looks Like:
A clean out is typically a 3" or 4" pipe with a visible cap. The following are examples of what it can look like.
Where To Find It:
Finding a clean out is not always straight forward. They can be located inside the house but are more often on the exterior of the house. You will need to carefully look at all sides to the house to find the sewer clean out because there could be more than one and they can be obscured by landscaping.
Knowing the location of your sewer clean out before you have to use it can save you time better spent clearing the stoppage.