Inquire about their cleaning techniques: warm water extraction for carpets

https://research-wiki.win/index.php/Tile_and_Carpet_Cleaning_Services_Checklist:_From_Grout_Cleaning_to_Deep_Steam_in_St_George_29926

Inquire about their cleaning methods: warm water extraction for carpets and proper grout-safe methods for tile to prevent damage and residue.