For the first part of cleaning, you will need : wheat flour, salt and steel scrubber.
Sprinkle wheat flour and salt on chopping board. Take little water and start scrubbing diagonally.
Once done, wash the board. If your board has a lot of dark spots, then follow the next step. Otherwise, follow only the first step and board should be clean. Try and clean the board using wheat flour and salt on regular basis.
For the next step, you will need : Eno sachet, Salt and Dishwashing Liquid.
Sprinkle eno and salt on the board. Put little dishwashing liquid. Spread using a scrub. Leave this for 3-4 minutes.
After 3-4 minutes, scrub again diagonally and wash once done. Let the board dry completely before use.