Disinfecting floors by using quaternary disinfectants (quats) is a common practice, especially in healthcare facilities. This should be a two-step process of cleaning and then disinfecting. However, quats are commonly used in one step, and while they are a disinfectant, they aren’t effective cleaners. In fact, quats are classified as cationic surfactants and are positively charged1, which, when in opposition to a negatively charged floor, can create a molecular attraction.
![Positive and negative charges attract Positive and negative charges attract](/Portals/0/EasyGalleryImages/1/71/Quats_Buildupb.jpg)
The positively-charged quat residue is attracted to the negatively charged floor. Since quats have a natural stickiness or tackiness, they attract soils to them.
![Residue builds up over time in layers Residue builds up over time in layers](/Portals/0/EasyGalleryImages/1/71/Quats_Buildupb2.jpg)
These two properties—the molecular attraction of the quats to the floor and dirt to quats—creates an environment in which the residue and dirt build-up can become thicker and more layered over time.
This residue can lead to all sorts of problems, including:
- Unappealingly sticky floors
- Floors that look dirty faster
- Slippery floors that can lead to more slip and fall accidents
- The creation of bio-films that can serve as a breeding ground for bacteria
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