When it comes to cleanliness, some people are mixing technical terms leading to ambiguity. It is like mixing chemicals together: That is not a good idea! To keep it simple, we’ll just give three useful definitions.
A deteriorated surface shows wear off sign often caused by time or misuse.
Deterioration is one of three elements of impairment of property, the others being functional obsolescence (or obsolescence) and economic obsolescence.
Safe surface means that it is safe to health. Such surface is healthy or good for health often because of risk management. In the food industry, this is why we often refer to it as food safety.
Safe is also synonymous to hygienic !
Disinfection is a voluntary momentary removal operation of certain bacteria (if it comes to “all germs” we refer more to sterilization), so as to stop or prevent infection or the risk of infection or superinfection by pathogenic or undesirable microorganisms or viruses.
- To sanitize a surface eliminates 99.9% of microorganisms (This is a 1,000 X reduction)
- To disinfect a surface removes 99.999% of microorganisms (This is a 100,000 X reduction)
- To sterilize a surface or instrument removes 99.9999% of microorganisms (This is a 1,000,000 X reduction)
Obviously, “momentarily” is a key fator because the surface will be contaminated again as soon a a contaminant will enter in contact with the it. That’s why some disinfectants have a residual effect that prolongs the action of disinfectant for a certain time.
Sources: Larousse, Wikipedia, Linternaute