The contents of a surplus pool shall not be marketed in any form which would directly compete with that portion of the commodity which is regularly certificated or which is in a stabilization pool. Any part of any surplus pool may, however, be transferred by a marketing program committee on a gratuitous basis to any charitable organization, self-held cooperative, or similar agency under proper safeguards to prevent any part of the commodity so disposed of from directly competing with the part of the commodity which is marketed through the usual channels of trade.