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Benin
Practice Relating to Rule 73. Biological Weapons
In the preliminary stages of the First Review Conference of States Parties to the Biological Weapons Convention in 1980, Benin confirmed that it “has developed no weapon of that kind, and intends to continue to respect its undertakings under the Convention, to which Benin is a party”. 
Benin, Response to the request by the Preparatory Committee for the First Review Conference of States Parties to the Biological Weapons Convention, Geneva, 3–21 March 1980, excerpted in UN Doc. BWC/CONF.I/4, 20 February 1980, § 31.
In 1994, during a debate in the First Committee of the UN General Assembly, Benin advocated the elimination of bacteriological weapons. 
Benin, Statement before the First Committee of the UN General Assembly, UN Doc. A/C.1/49/PV.3, 17 October 1994, p. 21.