You also dont need much material or any special tool to execute this method.
Most of what youll need may already be available in your cupboard or your kitchen sink.
Slice 1 lemon, then use only half of it and squeeze it over the gas burner.
Image Credit: twisty tadka via YouTube
Scrub all over the burner including the inside.
Once done scrubbing, wash/ rinse it with clean water, and dry with a cloth or rag.
*Thanks totwisty tadkavia YouTube for all images used here.