A persistent, unpleasant smell of sewage or rotting organic matter.
DIY methods are great for localized blockages, but some problems require professional equipment like CCTV cameras and industrial electric eels. Call a plumber if: unblock outside drain
| If you have... | Your best move... | | :--- | :--- | | | Try Drain rods first. If no luck, Pressure jetter . | | Standing, stagnant water | Do not use chemicals. Use a plunger to get water moving, then rods. | | Tree roots nearby | Skip DIY. Call a professional (they will use a root cutter attachment). | | A recurring blockage | Pay for a CCTV survey (£100-£150) before paying for repeated clear-outs. | A persistent, unpleasant smell of sewage or rotting