Understanding what leads to blocked drains can help you take preventive measures. Some of the most common causes include: Tree Roots. Tree roots naturally seek moisture and can infiltrate pipes, leading to severe blockages. Grease and Fat Buildup. Kitchen sinks often accumulate grease and food debris, which solidifies and clogs pipes over time. Hair & Soap Residue. Bathroom drains frequently become blocked due to hair, soap scum, and other residues.
