Try 1001 Pet Stain and Odour remover or 1001 Spot Shot.
Remove all solid residue from carpet.
Apply 1001 Pet Stain and Odour removeror 1001 Spot Shot to area.
Gently wipe stain from outside to centre without rubbing too hard.
Allow to dry and reapply if necessary.
2 or 3 light applications are more effective than one drastic application.
After treating the stain, blot up any excess liquid.
Always test an inconspicuous area before use.
Always wear rubber gloves.