(a) Each container of Walla Walla Sweet Onions shall be conspicuously marked with the “Genuine Walla Walla Sweet Onion” logo. The marking may be in the form of a decal or a stamped imprint of any color and size: Provided, That the decal or stamped imprint must be placed in plain sight and easy to read.

(b) Walla Walla Sweet Onions may be handled not subject to the marking requirements of this section when handlers ship such onions pursuant to § 956.163, or ship such onions in field packed bulk bins containing more than 500 pounds net weight for sale to roadside stands and farmers' market operators for repacking and direct consumer sale: Provided, That subject to Committee verification of handler container inventories, handlers may use their existing inventories of unmarked containers until April 15, 1999.