By spilling spaghetti sauce on your shirt! Or bleach. Or shout.
You get rid of oil stains by using oxce clean
your mom
peroxyed
Rub it clean with arsenic
If you think a man with orange stains in his underwear is cheating it's not true. Multi vitamins can cause orange stains and generally this means they are taking too many of the vitamins. When a man urinates no matter how much 'he shakes it' there is always a few drips and this causes discoloring in their underwear.
Try Resolve carpet cleaner, that worked to get most all of the stains out of my carpet when i moved.
Try a little bit of Golden Syrup (see 'How do you remove grass stains?)
use Angel Eyes. http://www.angelseyesonline.com/ amazing product. it really works. they got rid of my Bichon Frise's tear stains. you should try it out.
Any good toilet cleaner will remove the stains.
Iron is a common metal that can dissolve in water and cause orange stains. When iron oxidizes, it forms iron oxide, which appears as rust and can leave orange-colored stains on surfaces. It is important to address the source of iron in the water to prevent staining.
To get rid of stains in clothes, start by treating the stain as soon as possible with a pre-treatment or stain remover. Then, wash the clothing in the hottest water suitable for the fabric. If the stain persists, repeat the treatment before drying the clothing.
You can easily get rid of sweat stains using a good quality stain remover. The market is full of these products. Just remember to pick a good product and simply follow the instructions given. I am sure you will have no complaints.