Click here for more information on manufacture date. Once diluted, shelf life is up to 6 months depending on quality of water source. Storage and Disposal: Store at room temperature. Dispose of empty concentrate bottle according to local regulations. Cautions: Keep out of the reach of children. Eye irritant. Direct skin contact with concentrate may cause an allergic reaction in some individuals. In case of eye contact, flush with plenty of water. Call physician or Poison Control Center if irritation persists. In case of skin contact, rinse off with warm water.