"a biocide is a chemical substance or microorganism which can deter, render harmless, or exert a controlling effect on any harmful organism by chemical or biological means."
-http://en.wikipedia.org/wiki/Biocide
also from wikipedia..."biocide can also refer to the destruction of life, a form of omnicide that affects every living thing, not just humans"
anyways, an interesting set of biocides (in the primary sense) are quats (short for quaternary ammonium cations). they are a kind of soaps, but unlike commonly used soaps, they have molecules that are positively charged. micro/macro-organisms tend to get destroyed by them. swallowing a quat is like swallowing a soap. you'll feel unwell and want to throw up. but if you take meds against throwing up, it will clean your body
away from the face of earth. not completely, but to a large enough extend to cause death. within less than 1 hour. there's so many quats as part of so many products, it makes no sense to list them all. but just to meantion one: Siccaprotect® Augentropfen, containing these so-called artifial tears, is an eye cleanser/moisturizer, prescription free.
30 mg/ml is the benzalkonium chloride concentration, 1 bottle (10ml) provides us with 0.3g of benzalkonium chloride. instead of squeezing it out onto your eyes, you can squeeze it out into your mouth. and swallow.
"the fatal dose in humans ingesting cationic detergents has been estimated to be 1 to 3g"
-http://toxnet.nlm.nih.gov/cgi-bin/sis/search/a?dbs+hsdb:@term+@DOCNO+567
this is more or less true for all quats. but especially in the case of our case, consider... "benzalkonium chloride (a quaternary ammonium compound) can produce rapid toxic effects (caustic burns and respiratory depression) following minimal ingestions; doses of about 100 mg/kg are thought to be potentially life-threatening"
-same source as above
a 60kg person might need 6g then. that's 20 bottles (200ml) of artificial tears for a proper disinfection of his/her/zir body.
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