Common Misconceptions About Hygiene

Last updated: February 2026

The notion that antibacterial soap is more effective at preventing the spread of illness than regular soap is a widespread misconception.

Misconceptions

Myth: Antibacterial soap is more effective at preventing the spread of illness than regular soap.
Fact: The US Centers for Disease Control and Prevention (CDC) states that there is no added benefit to using antibacterial soap, as regular soap is just as effective in removing bacteria and other microorganisms from the skin (CDC).
Source of confusion: This myth persists due to the misleading marketing of antibacterial soap products, which often claim to provide extra protection against germs.

Myth: You should wash your hands with hot water to kill more bacteria.
Fact: The CDC recommends washing hands with warm or cool water, as water temperature does not appear to affect microbe removal (CDC), and the World Health Organization notes that hot water can strip the skin of its natural oils, potentially leading to irritation.
Source of confusion: The idea that hot water is more effective at killing bacteria may stem from the fact that high temperatures can kill bacteria in certain contexts, such as in sterilization processes.

Myth: You should use a lot of soap to get your hands really clean.
Fact: Using too much soap can actually decrease the effectiveness of handwashing, as excess soap can make it more difficult to rinse off all the soap residue, potentially leaving behind more bacteria (American Society for Microbiology).
Source of confusion: This myth may have originated from the idea that more soap equals more cleanliness, which is not necessarily the case.

Myth: Hand sanitizer is just as effective as washing your hands with soap and water.
Fact: The CDC states that hand sanitizer is not a substitute for washing hands with soap and water, particularly when hands are visibly soiled or contaminated with bodily fluids (CDC), and the World Health Organization notes that hand sanitizer may not be effective against all types of germs, such as norovirus.
Source of confusion: The convenience and widespread availability of hand sanitizer may have led to the misconception that it is equivalent to washing hands with soap and water.

Myth: You only need to wash your hands for a few seconds to get them clean.
Fact: The CDC recommends washing hands for at least 20 seconds to effectively remove bacteria and other microorganisms (CDC), and the World Health Organization notes that the duration of handwashing is a critical factor in determining its effectiveness.
Source of confusion: This myth may have originated from the idea that a quick rinse is sufficient to get hands clean, which is not the case.

Myth: Touching pets or animals can spread a lot of diseases to humans.
Fact: While it is true that some diseases can be spread from animals to humans, the risk is relatively low if proper hygiene practices are followed, such as washing hands after handling animals or their waste (CDC).
Source of confusion: The media often sensationalizes cases of disease transmission from animals to humans, creating an exaggerated perception of the risk.

Myth: Antibacterial soap is more effective → Fact: Regular soap is just as effective (CDC)
Myth: Hot water kills more bacteria → Fact: Water temperature does not affect microbe removal (CDC)
Myth: More soap equals more cleanliness → Fact: Excess soap can decrease effectiveness (American Society for Microbiology)
Myth: Hand sanitizer is equivalent to washing hands → Fact: Hand sanitizer is not a substitute for washing hands (CDC)
Myth: Quick handwashing is sufficient → Fact: Washing hands for at least 20 seconds is recommended (CDC)
Myth: Touching pets spreads many diseases → Fact: Risk is low with proper hygiene practices (CDC)