Which type of solvent spotter should be used in small amounts and never for overall cleaning?

The use of dry solvent spotters is specifically designed for targeted spot cleaning rather than for overall carpet cleaning. This type of solvent carries the advantage of effectively dissolving oily stains and residues without introducing moisture, which can be beneficial for delicate fabrics or carpets that may be adversely affected by water. Dry solvents operate by breaking down the adhesive bonds of stains while leaving little to no residue behind.

By using dry solvents in small amounts, professional carpet cleaners can manage localized issues with precision. They are formulated to penetrate the stain and lift it without saturating the area, which is essential to avoid damage or alteration to the surrounding fibers or backing. For example, light oils or grease encountered on carpets may necessitate a dry solvent to prevent the risk of water damage and to maintain the integrity of the flooring material.

In contrast, options like wet solvents or all-purpose cleaners typically involve higher moisture content or broader applications that are not suitable for every stain type, particularly not for delicate fabrics. Stain removers may vary in formulation and could also be more suited for comprehensive cleaning scenarios rather than targeted treatment.

Therefore, understanding the use of dry solvents as a precise tool for spot cleaning, as opposed to broader cleaning methods, highlights why this choice is the most appropriate.