Test the rug for the possibility of color bleeding. If the rug may bleed, you will need to be prepared.
Examine the construction. These comments assume a machine woven rug, not a gunned rug.
Remove dry soil, by vacuuming, dusting machine, tumbler, air duster or other process.
If the rug is likely to bleed, apply a solution of Dye-Loc. Follow label directions.
Treat the rug (or just the contaminated areas) with Wool Medic. Treatment may require anywhere from 30 minutes to several hours depending upon how thick the rug pile is and how much urine is present. This would require soaking in a temporary rug washing pit.
Flush the loosened urine and any fugitive colors from the rug. Rinse with lots of water (fire hose is good) and a urine roller or hard plastic squeegee. Continue until no more urine or color is being removed from the rug. Placing the rug on a slanted surface allows the contaminated water to be flushed more easily.
Have additional Dye-Loc mixed in a 5 gallon bucket and ready to apply if needed.
Wash the rug with Wool Perfect.
Rinse with Wool Zone.
Dry with air movement. Drying face down will be helpful.
or bring the rug to the next Hands-on rug washing class and wash it in class under supervision.
Washington DC area Sept 26th-28th. Orlando FL Nov 7th-9th. Several students have paid for the class by charging clients for the rugs they brought.
This should be a $5 to $7 sq. ft. rug when cleaning and urine decontamination are considered.