Teddy Moon with Rainbow International of Marysville, WA had a job like this recently and this example was published in Cleanfax magazine. Check out the pictures below This involved more than cleaning the carpet pile. It meant his company had to pull back the carpet, trade and clean the backing, using special and powerful detergents and deodorizers to obtain acceptable results.
So when you have a pet accident on the carpet, it may involve more than simply cleaning the surface. Think deeper!