Perfect DIY Carpet Cleaning Method + Recipe - 1 part vinegar, 2 parts water. Mix together in spray bottle. Spray stain and cover with damp rag. Set your iron on stain release (high steam setting) and iron over rag about 30 seconds. May have to repeat a couple of times depending on stain. This is only for ORGANIC stains. (Food, pets, dirt, etc). DO NOT USE FOR INK!
To remove arm pit stains make a stain remover mixture; of one part Dawn dishwashing liquid mixed with two parts Hydrogen Peroxide but stains are stubborn (in my experience even pouring bleach directly on the stained area didnt work at all). So add some baking soda to the mixture and scrubbing it in for a few minutes. After thaat let the shirt sit for an hour or so and then wash as usual.