Caring For Your Kōkua Bottle
Before initial use of your bottle, hand wash with warm, soapy water.
Put your Kōkua Bottle through the dishwasher. The dishwasher can get hot enough to affect the insulation property of the flask as well as discolor the powder coat. Similarly, soaking your entire flask in hot water can discolor the powder coat.
Wash your flask with a bottle brush: You can find a perfect bottle brush in the baby section of most grocery stores. Use the bottle brush as frequently as possible.
Use white distilled vinegar for cleaning: You can use household white distilled vinegar to help remove any stains or discoloration on the inside of your flask. We recommend putting ½ cup of vinegar in your flask, gently swirling the vinegar around to wash any affected areas and let sit for 5 minutes. Rinse thoroughly with warm water and repeat if necessary.
Use baking soda for cleaning: For those stubborn spots inside your Hydro Flask, mix 2-3 tablespoons of baking soda with a small amount of warm water to form a scrubbing paste. Dip the bristles of your bottle brush in the paste and work paste into affected area on the inside of your flask. Repeat as necessary until stain disappears.
Avoid dropping your Kōkua Bottle. While our bottles are very durable, if dented deeply, the vacuum insulation can be broken and the bottle will not insulate as well.