Here are some of the groups you can ask your rug professional if they hold a membership in or if they have received training/certification from

The Carpet and Rug Institute

The 204 and 205 standards were developed by manufacturer representatives with technical backgrounds along with input from the cleaning industry to form the most comprehensive guide for commercial and residential cleaning. These standards are also the only carpet cleaning standards created and supported by the industry.

Website: https://carpet-rug.org/about-us/newsroom/