Instead, a little manual labour is required. "The best way is to remove the waste trap from below the sink and clear the blockage manually," says Robert Raschke-Kremer from the DIY Academy.

A flexible cord is permitted for an in‑sink waste disposal if: (1) The flexible cord is at least 18 in. in length and no longer than 3 ft. (2) The receptacle is located to protect the flexible cord ...

Exception: A listed in‑sink waste disposal marked as protected by a system of double insulation isn’t required to be terminated with a grounding‑type attachment plug. (2) The flexible cord length is ...