To get ketchup stains out of your carpet, try to catch them
while they are still just ketchup spills - before they become
stains. Water can remove many substances if you get them before
they affect the fibers of the carpet. Rinse, blot up the moisture,
and repeat the process. now, if you still have a stain, or if
you discovered the spill days later, here are some steps you
can take to remove it.
Scrape out any dried bits with a dull knife or the edge of
Moisten with water and blot this up with plain white paper
towels or a clean white cotton cloth. Repeat this process until
you have removed as much of the stain as you can. Then go to
the next step.
Mix a tablespoon of clear household ammonia in a half-cup
of water and put it in a spray bottle. Spray the spot, blot up
the moisture and repeat the process. Try not to spray it so heavily
that the mixture soaks down to the bottom of the carpet. Continue
doing this until you see no more stain transfer to the cloth.
Rinse the area several times with a little bit of water, blotting
it up each time. Move on to the next step if necessary.
Make a mixture of a few drops of dish washing detergent (plain
blue Dawn works well) and a cup of warm water. Apply this to
the stained area carefully, soaking it up with paper towels or
cotton cloth between applications. Continue as long as you see
transfer to the cloth. Once there is no more transfer, you have
removed as much as you're going to, although a professional cleaner
might be able to remove ketchup stains more thoroughly.
Final instructions follow this video on removing ketchup
Rinse with water repeatedly to remove any remaining detergent
(which otherwise attracts dirt), blotting up the water after
each application. A stack of white paper towels with some weight
on them will help dry the area quickly. Remove this after an
hour and set a fan nearby to blow over the spot.