You can use the chemicals in this flask to soak a rag or other small cloth item. An open flask of ether or an ether-soaked rag retains its potency for 1 minute or until you hit with it. While you are grappling a creature, you may make a special melee weapon attack against it using ether. On a hit, the creature makes a DC 12 Constitution saving throw or fall unconscious. The creature remains unconscious for 1 minute, until it takes damage, or until an action is used to shake or slap the creature awake.