It's not recommended to use bleach on your Allbirds shoes as it can damage the shoes. If you really want to use bleach, make sure to use non-chlorine bleach and always test it on a small area of the shoe first. Always wash your allbirds shoes with a mild detergent first. And then, you can use a bleach solution to remove any stains or dirt. However, it's always a good idea to stick to detergents as they are safe and less likely to damage the allbirds shoes.