How to Get Beet Juice Out of a White Shirt | Our Everyday Life Step 2 Turn the shirt so the right side is out, and apply a prewash laundry stain remover to the juice stain. Let it sit for 10 to 15 minutes. Rinse the affected area of the shirt with cold water. Step 3 Mix 1 gallon of water and ¼ cup chlorine bleach into a bucket. Place the shirt in the mixture and soak for up to 10 minutes.