Keeping your water bottle clean is very important to maintain hygiene and prevent bacteria buildup. Over time, moisture inside bottles can create an environment where germs grow. Therefore, cleaning your bottle regularly is a must. Start by washing your bottle every day with warm water and mild soap. Use a bottle brush to clean the inner walls and the cap thoroughly. Make sure to rinse it well to remove any soap residue. Let it air dry completely before closing the lid to avoid moisture buildup.