Human: What is the best way to remove a stain from a white t-shirt? Assistant: 
The best way to remove a stain from a white t-shirt is to pre-treat it with a laundry detergent or spot cleaner designed for removing stains, then wash it in warm water and tumble dry on low heat. If the stain persists, you can try using a mixture of baking soda and water as an alternative cleaning solution.