Disinfectants should be used on which type of surfaces?

Disinfectants should be used on which type of surfaces?

• A. Porous surfaces
• B. Non-porous surfaces
• C. Pre-cleaned, hard non-porous surfaces
• D. Painted surfaces

Answer: (C)

Disinfectants work best when they can actually reach and contact the microorganisms. That means the surface should be clean of visible soil and oils first, and it should be hard and non-porous so the chemical can stay wet long enough to work. Porous materials—like wood, fabric, or unsealed stone—have tiny pores that trap dirt and microbes, and the disinfectant can’t reach or remain in contact with them effectively. Pre-cleaning removes the initial soil that can shield microbes and can also neutralize or reduce the disinfectant’s effectiveness. A hard, non-porous surface that has been pre-cleaned provides a smooth, sealed area where the disinfectant can coat every part and achieve the required contact time to kill germs. Painted surfaces can be damaged or may not always be truly non-porous if the paint is chipping, so the safest, most reliable choice is disinfecting on pre-cleaned, hard non-porous surfaces.

Disinfectants work best when they can actually reach and contact the microorganisms. That means the surface should be clean of visible soil and oils first, and it should be hard and non-porous so the chemical can stay wet long enough to work. Porous materials—like wood, fabric, or unsealed stone—have tiny pores that trap dirt and microbes, and the disinfectant can’t reach or remain in contact with them effectively. Pre-cleaning removes the initial soil that can shield microbes and can also neutralize or reduce the disinfectant’s effectiveness. A hard, non-porous surface that has been pre-cleaned provides a smooth, sealed area where the disinfectant can coat every part and achieve the required contact time to kill germs. Painted surfaces can be damaged or may not always be truly non-porous if the paint is chipping, so the safest, most reliable choice is disinfecting on pre-cleaned, hard non-porous surfaces.