(just a floor drain): Wet a rag, place it around the plunger edge, and press firmly to create a seal on the flat surface.
: Solidified fat and grease (FOG), food particles, leaves, twigs, and sometimes intrusive tree roots. how to unblock an outside kitchen drain
For serious blockages, you need drain rods. These are screw-together fiberglass poles with various attachments (plungers, corkscrews). (just a floor drain): Wet a rag, place