I've had some success with muriatic acid- although you have to be very careful & only works if stains not too deep. They sell it in pool supplies.
You can clean salt stains off of Nubuck shoes using a solution of water and vinegar. Try and clean the stain as soon as you can for best results.
acetone and bleach
hydrogen peroxide and cold water
Using a long handled bottled brush is one way to clean hard water stains from a bud vase. If that does not work, put several broken egg shells or uncooked rice with a little bit of water. Put your hand over the opening and shake well until you see the dust, dirt and film come off. Other unsightly hard stains can be removed by soaking in a solution of hot water and white vinegar. Rinse with water.
Because Its ingredients and of all the butrients:/
I heard baking soda and warm water works.
If you've already tried washing it with soap and water, then try an eraser. Regular kind or the Mister Clean Eraser thingy.
You can clean salt stains off of Nubuck shoes using a solution of water and vinegar. Try and clean the stain as soon as you can for best results.
so you can clean the stains off your clothes
Rub the stains with a rag dipped in Goof Off.
bleach and ammonia
acetone and bleach
Gently, with water.
hydrogen peroxide and cold water
Sandblasting beads are small glass bead with no holes. They are sprayed by a sandblasting gun at very high speeds at metal to clean off rust or paint the same way you can use a pressure washer to clean dirt, loose paint and stains from a wooden deck.
Bit of spit and a rub
Ketchup and a sauce pad.