Baseball caps can collect stains and smells over time. Need to refresh or deep clean your favorite baseball caps ? Get deals and low prices on hat cleaner form on amazon Fill a clean sink or basin with cool water. Let the hat soak. · to clean a baseball cap: Read customer reviews & find best sellers. Add a drop or two of mild laundry detergent. Keep your baseball caps in their best shape by wiping them down between washes and air drying. Amazon. com has been visited by 1m+ users in the past month · here are easy ways to wash a baseball cap by hand or in the washing machine plus tips to remove stains and whether you should wash it in the dishwasher. Free, easy returns on millions of items. Make sure it has enough space for the hat to be fully submerged. If you have tough stains on the hat , use a stain. · hand wash baseball caps with cold water and a mild detergent. · heres how to wash a baseball cap if it just needs an easy refresh. Fully submerge the baseball hat and let it soak for 5 to 10 minutes. · learn how to wash a baseball cap by hand and in the washing machine with these tips from experts. Avoid machine washing baseball caps, especially those with a cardboard brim. · learn how to wash a baseball cap properly, so it doesn’t lose its shape. Dunk the hat and agitate the water to create some suds. They also explain how to spot-treat stains, which is especially important if youre cleaning a baseball cap with a cardboard brim. Learn how to wash a baseball cap with these easy step-by-step instructions and helpful hat washing tips. Fill a large container or bucket with water. Our expert guide provides 3 different ways to clean baseball hats.