You can use hydrogen peroxide to remove old blood stains that have firmly set into the carpet fabric over time.
Blood stains out of white carpet.
This is because the heat will cause the blood stain to really set in the carpet.
After the solution has been absorbed grab a toothbrush and start working it in some more.
For this method you can use a spray bottle and start spraying from the outside in.
If this process does not get blood out of your carpet follow these steps as an alternative stain removal option.
To remove blood stains from carpet apply hydrogen peroxide to the stains and let it dry completely which will lighten the carpet fibers and hide the stains.
Take a clean white cloth and dip it in the detergent solution you just mixed.
Apply potato starch to the stain.
Dab the area gently with a damp cloth and then absorb as much of the liquid as possible by blotting with a dry white cloth.
Apply the cleaner or stain remover to saturate the.
You can also try cleaning the stains with shampoo and ammonia.
Soak the blood stain in hydrogen peroxide for a few minutes and iron the area on the highest heat.
Enzymatic based cleaners may work on bloodstains because blood is a protein.
Repeat steps 3 and 4 until the stain has disappeared.
Dry and repeat as necessary until the stain is gone.
Detergent solution if the stain has dried gently go over it with a soft brush to break up the deposit.
You can definitely remove blood from the carpet by using some cool water baking soda and some vinegar.
Next apply a clean sponge dipped in cold water.
Blot directly on the blood stain repeatedly.
Commercial carpet cleaners and stain removers offer another option.
Dry blood can be removed from your carpet using any of the methods above.
In this case heat.
For stubborn carpet blood stains mix ammonia with warm water and blot the stain.
However it is going to take more than one going over to fully remove the stain.
Also hot water is a most definite no when it comes to getting blood out of a carpet.