The best way to repair a carpet stain is to first figure out what that stain is. If the stain is something organic like food, pet accidents or ground in dirt then removal tends to be easier.
Repair Carpet Stain
When you first set out to repair your carpet stain get a plan of action ready and test it in a place that doesn’t show. You want to make sure that your carpet isn’t going to be further damage by what you are going to do to clean out the stain. So, pretend to clean the stain in a corner, under a piece of furniture that isn’t likely to be moved, etc.
Organic stains are usually the easiest to get out. You’ll need a squeeze bottle (like you’d put ketchup in), a box of 20-Mule Team Borax and hot water. Heat one cup of water to boiling and quickly stir in 1 tablespoon of Borax. Keep stirring until the Borax is dissolved. Pour the mixture into the squeeze bottle.
Squeeze the mixture onto the stain and let it sit for 30 minutes. The Borax will breakdown the stain over time and it’ll disappear.
When time is up, check the stain. Blot up what is left of the solution. Add water to the area and blot that up with a clean towel.
If your carpet has a chalky spot where you removed the stain, vacuuming might be all you need to do to remove it. If not, add more water to rinse it out and blot it up with a clean towel.
This method works great to repair a carpet stain in a carpet made of artificial or cotton fibers. You should never put hot water on a wool carpet. Borax must be very warm to work, so don’t use this method on wool carpet.