Milk can leave behind some stubborn and unsightly stains, particularly on soft, absorbent materials such as those used for boots. If you attempt to use harsh cleaning solvents, you may discolor your stained boot permanently, and in some cases may even damage the texture. Suede, for example, is highly sensitive to harsh cleaners. In order to remove the milk stains without harming the boot itself, you must use just the right solutions in a cautious manner.
Mild Dish Detergent
Mild dishwashing detergent is gentle enough to clean even the most sensitive boots but strong enough to eradicate milk stains. Just add a tablespoon of detergent to 2 cups of water and mix. Apply the mixture to a soft cloth, wring out the cloth and gently scrub the milk stain. Some boots, such as those made of suede and leather, are sensitive to excess moisture, so make sure to use only a damp (as opposed to a saturated) cloth.
Leather Boot Solutions
In some cases, you can successfully lift milk stains using cleaning solutions specially designed for the type of boot. For example, spray or cover leather boots with a commercial leather cleaner or saddle soap, and then scrub the boots with a leather brush. This will safely lift the stains without damaging the leather, since the solution is specifically designed for leather surfaces. Always follow the manufacturer's directions for proper use.
Suede boots are extremely sensitive to liquids, and the soft material may harden or become misshapen with excess water exposure. For best results, just avoid liquid solutions altogether. Many dry solutions can help you to remedy stains such as those that result from milk. For example, try scrubbing the milk stain with an emery board or standard eraser. For a stronger and more effective dry solution, scrub the boot with a dry cleaning solvent.
In some cases, you may successfully combat milk stains using baking soda. Just sprinkle some baking soda onto a damp cloth and then scrub the stain. Wipe with a second damp cloth to remove the baking soda and the lingering residue. If you have rubber boots, try scrubbing the boot with a dry scouring pad. Rubber boots are less porous, so the stain should lift with greater ease.