LinuxQuestions.org

LinuxQuestions.org (/questions/)
-   General (http://www.linuxquestions.org/questions/general-10/)
-   -   Im just curious. (http://www.linuxquestions.org/questions/general-10/im-just-curious-4175445656/)

tailinlinux 01-15-2013 01:47 AM

Im just curious.
 
Why do soap only can kill 99% of germs? how about the 1%? Why they can't kill that 1%? lol

kooru 01-15-2013 02:08 AM

Statistical probability.
Or bad luck :D

H_TeXMeX_H 01-15-2013 03:21 AM

Because some germs are too tough.

This makes you wonder why you really want to kill that many in the first place. You leave the tough ones behind and eliminate their competition so they can multiply freely.

I am very weary of these "kill 99.9%" claims. I'd prefer things that just thin their numbers, more like 80-90%.

This is of course, IMO, no science or articles or proof, just thought.

Really, it's a form of selection. You select for tougher and tougher germs by using chemicals that put a lot of evolutive pressure on the germs.

brianL 01-15-2013 04:09 AM

Has anybody actually counted the germs before and after washing to see if the claim is true? :)

H_TeXMeX_H 01-15-2013 05:36 AM

Quote:

Originally Posted by brianL (Post 4870397)
Has anybody actually counted the germs before and after washing to see if the claim is true? :)

I'd say more appropriate would be count + how dangerous they are. I remember a mythbusters episode where they found the most germ-filled and dangerous thing in your home is your kitchen sponge ... which I have suspected for a while because of the smell it usually gets.

I wash dishes by hand or in the dishwasher and don't use a sponge.

druuna 01-15-2013 06:09 AM

Quote:

Originally Posted by tailinlinux (Post 4870313)
Why do soap only can kill 99% of germs? how about the 1%? Why they can't kill that 1%? lol

Maybe a bit out-of-scope, but what's the point (generally speaking) of killing 100% of the germs?

The following is true for 99.9% of all house-holds:
- open (dirty) tap with dirty hand(s)
- wash hands
- close dirty tap with clean hands
- hand(s) now contain germs again.......

There really is no point in producing house-hold soaps that kill 100% of the germs......

Knightron 01-15-2013 06:30 AM

Here's my uneducated but logical view. For one, if the product is advertised to kill 100% of germs, then they are open to being sued if an exception comes up. Another point, what is a 'germ'? I believe a germ is a generalized word, like 'bug' which is open to interpretation, and so claiming to kill 100% of germs again leaves them open to a law suit. Sanitizer is claimed to kill 100% of bacteria, but bacteria are not 'germs'. Germs are always thought of as bad, bacteria can be beneficial or harmful. Viruses are not bacteria, but sanitizer does kill many viruses (i think). Viruses, reproduce with spores like fungus, Sanitizer also can not kill spores.
This doesn't answer your question for sure, but i think that the first two points are very valid reasons.

TobiSGD 01-15-2013 07:22 AM

There are two things why killing 99% of germs is in general a bad idea:
1. As H_TeXMeX_H already pointed out, it will only leave back the resistant strains. This is why we have nowadays problems with ineffective antibiotics and why the most dangerous strains of bacteria usually are found in well cleaned places, like hospitals.
2. Living in an environment with almost no bacteria leaves your immune system untrained, so that it sometimes starts to overreact even if there is no threat to it. This is why we have so many allergic people nowadays.

Besides that, one other place to look for huge amounts of bacterias, besides your kitchen sponge, is your computer keyboard. I wonder how many people now go out and search for speech recognition systems.
Jokes aside, contrary what the cleaning agent industry wants you to believe, germs are not necessarily a bad thing, they help you to keep yourself healthy with training your immune systems (and also to live in your digestive system and other parts of your body to help you with your body functions).

druuna 01-15-2013 07:41 AM

@TobiSGD: Germs (etc) are definitely not a bad thing and the (social/industrial) pressure to be "clean" might indeed be the cause of some problems we are seeing nowadays.

Your reply made me think of the Hygiene hypothesis:
- Definition of Hygiene hypothesis
- Hygiene hypothesis

dugan 01-15-2013 09:09 AM

Quote:

Originally Posted by tailinlinux (Post 4870313)
Why do soap only can kill 99% of germs? how about the 1%? Why they can't kill that 1%? lol

Regular non-antibiotic soap doesn't kill any germs. It just removes them.

lupusarcanus 01-15-2013 09:41 AM

So, if they haven't harmed me yet, then they're not going to unless they do. Anti-bacterial soap isn't going to help... though I can transport them to the microbial quarantine known as the sponge and hope that the labyrinthine pores within keep them from escaping, causing their ultimate death as consequence for trespassing on my counter.

brianL 01-15-2013 10:05 AM

They will mutate into supergerms, eat your sponge, then eat you. YOU HAVE BEEN WARNED! :eek:

druuna 01-16-2013 03:03 PM

Todays xkcd: http://xkcd.com/1161/

;)

H_TeXMeX_H 05-20-2013 01:58 PM

Just an update on the antibacterial soap, which I do not like:
http://singularityhub.com/2013/05/20...-four-decades/
https://www.mayoclinic.com/health/triclosan/AN02141

m.a.l.'s pa 05-20-2013 02:20 PM

Don't soap operas kill 99% of brain cells?


All times are GMT -5. The time now is 06:21 AM.