If the toilet, shower, and kitchen sink are all draining slowly, the problem is likely in the main line rather than a single pipe.
A main sewer line clog is a systemic issue that often presents through multiple fixtures at once. Look for these warning signs: how to clear blocked sewer pipe
A strong smell of sewer gas around your drains or yard suggests wastewater is not flowing properly or there is a crack in the system. If the toilet, shower, and kitchen sink are
If you're experiencing a blocked sewer pipe, try these DIY methods: If the toilet
Unusual gurgling or bubbling sounds coming from toilets or floor drains indicate air trapped by a blockage.