Store homemade gatorade in airtight jars or bottles for up to 4 days in the fridge. You can also pour the gatorade mixture into ice cube trays or freezer-safe jars or bottles to freeze. Always allow room for the liquid to expand if freezing— about 1-2 inches of head space. Freeze for up to 3 months. Thaw overnight in the refrigerator or make a slushy by blending the frozen gatorade cubes!