Naked Snake carried several disinfectants in his field medical kit during the Virtuous Mission and Operation Snake Eater. In the former mission, he was forced to use it during the mission's conclusion after he sustained injuries during his encounter with The Boss at Dolinovodno's bridge, including lacerations to his upper arms, right elbow, and abdomen. Spetsnaz soldiers also carried these on hand at Tselinoyarsk. The disinfectants used in the region are made from the native Slav Horehound plant, due to it containing large amounts of diterpene, flavonoids, and alkanoids, which granted the plant large germicidial properties.