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Remove any residue from carpet.
Appy Spot Shot or 1001 Troubleshooter over the area.
Gently wipe stain from outside to centre without rubbing too hard.
Apply to dry & repeat as necessary.
Vacuum when dry.
If the stain has not all been removed apply a solution of Borax. Mix 1 tablespoon of borax to 1 pint of warm water (Rubber gloves should be worn when using Borax) & follow steps 5 & 6.
After treating the stain, blot up any excess liquid.
Always test an inconspicuous area before use.
Always wear rubber gloves.