Why does Dettol kill 99.9% of germs

"Dettol kills 99.9% of germs" we've heard that, in every advertising for the well-known disinfectant, ever since it has been so popular and has achieved great sales and customer trust, customers have been very curious to know the reason behind this phrase, i t's very misleading and confusing which leads to misperceptions to consumers, some of them would explain it as Dettol kills 99.9 germs and one germ remains to reproduce and make a clan again. It's hilarious that some have thought this is a malicious plan from the company so that you have to buy the product over and over again and that's exactly why it was described as "confusing". Why does Dettol kill 99.9% of germs? First of all, is that explanation above right? It might seem logical to consumers but no it's totally wrong. Pathogens are different types, each type has a different composition and therefore different ways to fight them, So to make it more accurate, Dettol kills 99.9% (types)