If you’re unsure if you have a problem look out for the common indicators of a blocked drain:
Smells – This is the most common indicator of a blockage.
Slow Drainage – Does your sink take longer than usual to drain? Does the water almost overflow when you flush your toilet and settle slowly? If so, a blocked drain is the likely cause.
Gurgling – Any unusual noises emanating from your drains are probably caused by blockages.