def format_chores(chores):
    """
    Formats the chores to properly utilize the Oxford comma

    :param list chores: list of chores
    """
    if len(chores) == 1:
        return f'{chores[0]}'
    elif len(chores) == 2:
        return f'{chores[0]} and {chores[1]}'
    else:
        chores[-1] = 'and ' + chores[-1]
        return f"{', '.join(chores)}"