Apply the mixture to the stain with a cloth.
Varnish stain on carpet.
A very effective general stain remover is a mixture of 2 tablespoons of salt and a cup of white vinegar.
This will give the solvent time to dissolve the varnish.
Apply vinegar mix to the stained area without soaking the carpet.
If the stain was removed do not proceed to the next step apply ammonia mix to the stained area without soaking the carpet.
Blot or gently stroke the carpet pile.
Open a window or turn on a fan to keep the fumes at a minimum.
Wet a cleaning cloth with a bit of paint cleaner and start blotting the area.
Place the towel over the stain and allow it to rest for five to 10 minutes.
Work from the outside edges of the spill towards the center.
Spray the stain and use a clean cloth to blot it up as the stain begins to loosen and lift from the carpet fibers.
Then press the damp material against the carpet repeatedly blotting up the stain as you go.
If what you have available is pure ammonia work more cautiously and dilute a teaspoon into in a cup of water before dabbing it onto your carpet.
Watch for loss of color.
Rinse the carpet by applying warm water without soaking the carpet.
100 acetone or hydrogen peroxide are suitable alternatives if you do not have paint cleaner available.
Continue blotting until the stain begins to break down and dissolve.
Do not rub the carpet as this may cause the stain to spread.
Vacuum or blot up the excess.