liquids unless it is specifically designed for it.
its always good to wash your shaker bottle each time you use it to prevent any sort of bacteria build up or residue from remaining. it is best to simply use some warm water and dish soap to clean your shaker bottle out. if your bottle is dishwasher safe, then place it in the top rack of your dishwasher during your next cycle. then simply air dry your shaker bottle to avoid anything from starting to grow on it! now every once in a while you might notice your shaker bottle starting to smell sour or a bit off. if an extra wash 