It depends on the material of the chopping board..

For wooden chopping boards:

• Scrub it with a stiff brush and hot soapy water. If you have been cutting raw meat on it, sprinkle the board with a bit salt and scrub it with the brush to disinfect.
• Since wood does not work well with water, do not leave it to soak.
• Dry the board well with a tea towel
• Put the board upright to prevent warping
• Use butcher block oil to oil your boards when the surface seems dry