Before calling a professional carpet cleaner you can try this do it yourself solution to remove tar from carpet.
Tar stain removal from carpet.
Leave for up to an hour then rinse with clean water and blot well.
Scoop up and blot as much of the spill as possible then vacuum up any dry particles.
Use a clean dry white towel as an alternative.
Tar or pitch stain removal cleaning tools and agents that may be needed.
A cleaning method that works to remove tar stains from carpet is dishwashing detergent.
Select a liquid soap that does not contain lanolin or bleach and mix about a quarter teaspoon of it with a quarter teaspoon of water.
A wet dry vacuum cleaner is ideal for stain removal work.
How to remove tar from carpet.
Even if blotting and scraping removed most of the chunks of tar in your carpet your carpet still may be stained a dark black from the pigment of the tar.
How to remove tar stains from carpet.
Don t rub rubbing just gets the offending agent spread around more of the carpet.
To begin to target this pigmentation using dry cleaning solvent pour water over a cloth rag then add a few teaspoons of dry cleaning solvent to one area of the wetted rag.
As soon as you discover the tar stain it s important to act quickly by scooping up any tar using a knife or spoon.
Carpet tar that has hardened may need softening first with a solution made up of equal parts of water and glycerine.
After blotting up as much as you can.
When the tar is hardened use a dull kitchen knife or the edge of a credit card to scrape away as much of the solid tar pieces as possible from the carpet fibers.
Get a kitchen knife or putty knife and scrape up the rest.
How to remove the stain.
Use a vacuum to capture every bit of the hardened tar.
Prepare suggested cleaning solutions above beginning with the first one listed.
First of all see what you can blot up with a paper towel.
Test the cleaning solution on a small inconspicuous section of carpet.