Do I need to be concerned about any harmful residues?

Absolutely not!  We would not knowingly introduce anything toxic into your environment.  We use safe, yet effective detergents and solvents in all of our cleaning and protection.  MSDS (Material Safety Data Sheets) are available on all the chemicals we use, and we will provide whatever information on them that we can.  If we need to spray anything that might cause you discomfort, we'll let you know, get your permission first, and ventilate thoroughly during and after application. We use gentle, softened water to thoroughly flush and rinse away all soil and detergent residues from your carpets and fabrics, leaving them soft, fresh, and germ-free!