One of the worst stains on carpet is liquid correction fluid, such as Wite-Out. The fluid hardens and attaches itself to carpet fibers quickly and is incredibly visible on most carpets. Surprisingly, it is simple to remove. Using solvents such as WD-40 and nail polish remover, which break up hardened bonds, the stain can be eliminated within 10 minutes.
Spray WD-40 on the white correction fluid stain. If possible, lift the carpet to spray additional WD-40 on the underside of the carpet where the stain sits. Use a generous amount on both sides. The stain should slowly start to loosen up.
Remove as many of the loose small white flecks as you can by picking them off.
Clean the spot to get rid of the WD-40. Grab a bowl of warm water and a couple of dry towels for supplies. Work the water into the stain from the outside edges in towards the center and rub in with your fingers. Pat away any liquid with a dry towel. Keep repeating this until the WD-40 is no longer present.
If any correction fluid marks still remain, take a dry washcloth and wet it generously with nail polish remover. Blot the stain with the remover and work in gently trying to loosen the remaining white marks.
Once all of the white marks are eliminated, clean the stain again following the same instructions in Step 3.