Using this biohazard costume is easy. First, put on the trousers and then the top. Next, tie the apron around your waist. Put on the hat to complete the look and don't forget the mask and gloves. When wearing it, make sure the mask doesn't obstruct your vision. Also, ensure the gloves fit well so they don't fall off. After use, simply hand - wash the costume in cold water. Hang it to dry and store it in a cool, dry place. This will keep the costume in good condition for future uses.