Question

why every cleaning substance kill only 99.9% of germs not 100% of germs ? ​

Answer 1

Answer:

Not sure

Explanation:

but not every cleaning substance can kill % of germs

Answer 2

Answer:

This type of statement and other similar ones that are used in the marketing of many common disinfectants can be misleading and potentially dangerous if it is the primary reason you are choosing a particular product.

Imagine you are concerned about the flu virus and you want to use a disinfectant that will be effective against all of this year’s Influenza types and strains. If a disinfectant claims that it will kill 99.9% of germs, it should kill 99.9% of the flu germs on a given surface, right? And, if killing 99.9% of germs is good, then a product that says it will kill 99.99% of germs should work even better, right?

WRONG. On both questions.

Some of the most popular disinfectants sold in the United States are effective on only a small number of pathogens. Many of these products have marketing statements that say the product “kills 99.9% of germs*.” However, somewhere on the container in small print is the list of germs it actually kills, and this list of germs may or may not include some or all of the Influenza viruses.

A quick look at the label of many popular products reveals some interesting facts found in the large print of marketing and the small print of reality. As a general rule of thumb, if you see an asterisk on a label then the marketing claims need a closer examination.