Method 1: For freshly stained juice, you can apply salt on the stain (let the juice adsorb on it) - moisten it with water - and wash it with soap.
Method 2: Rub the dried juice with white vinegar - let it sit for 5 minutes - and then wash it with water.
Method 3: Dissolve baking soda with water - scrub.
The last trick is also a strange trick: colored fabrics are washed with concentrated salt water → water washing → 10% ammonia water → detergent washing; white fabrics can be washed in bleach solution (3% to 5% sodium hypochlorite solution) for 1 to 2 hours and then rinse with clean water.
In addition, you can also use explosive salt to rinse, and the effect is also good. Explosive salt is sold in major supermarkets.