How to remove old sperm spots from bed sheets?

Methods to remove old sperm spots from sheets:

Material preparation: baking soda, laundry detergent, spoon, a cup of white vinegar, a cup of water.

Step 1: Pour white vinegar on the old sperm spots on the sheets (white vinegar contains acetic acid, which can kill sperm and break down sperm spots).

Step 2: Then sprinkle an appropriate amount of baking soda on top (baking soda has the effect of decontamination without leaving any residue).

Step 3: Then squeeze laundry detergent on top (laundry detergent has a decontamination effect).

Step 4: Wash the sheets carefully with your hands.

Step 5: Finally, rinse the sheets with water.

Step 6: The remaining sperm spots on the sheets have been cleaned.