For all these other stains we want to get rid of
Douse the garment with diluted solution of bleach and launder as recommended for the garment. For mildew on leather, brush on an antiseptic mouthwash.
Use a prewash stain remover; if the stains are old, apply white vinegar. Rinse, then launder using oxygen bleach in the hottest water that’s safe to use with the fabric.
Deodorant stains on the underarms of washable shirt: Sponge on white vinegar (or soak stain in it); wait 30 minutes. Launder shirts in the hottest water safe for the fabric. Using an enzyme detergent or a detergent with bleach alternative, check care labels to be sure this is okay. Also try putting liquid laundry detergent right on the area, leave it for 5-10 minutes, then wash.
Prevention – Let deodorant dry before dressing, and don’t let stains sit! Apply prewash spray or liquid detergent ASAP, and then launder. Every 3rd or 4th wash, use the hottest water safe for the shirts.
Cover with salt until all excess liquid is absorbed. Rinse in cold water. If residual stain remains, apply white vinegar or hydrogen peroxide. Launder according to the instructions on the item’s fabric-care label.
Rust and materials
Add 1 cup of lemon juice in the wash to remove discoloration on cotton.
With a small brush, brush hair shampoo on the collars before washing. Shampoo is made to dissolve body oils.