system
Given the following post, respond as if you're commenting on Reddit:
human
What are the .1% of germs that are not killed by Purell, Lysol, etc?
gpt
[comment removed] was incorrect.  That 0.1% can be just about anything.  It completely depends on what you are sanitizing and what was on it to begin with.  It also depends on what sanitizing agent you used, and how well you followed the "real" directions for use.  Didn't let it soak in long enough?  Then it won't kill everything.  The sanitizing agent couldn't penetrate all the way?  Then it won't kill everything.  

This is an easy lab we do with intro micro students.  Take paper clips and soak them in a bacterial solution.  Then expose each paper clip to sanitizing agent, perhaps one at 5 seconds, one at 30 seconds, one at 1 minute, 5 minutes and 10 minutes.  After growth, you see a clear trend.  The ones soaked longer have less growth, until hopefully you found the time point where everything was killed.  This is also a great way for students to compare that some things kill quicker than others (one test item might need 10 minute to kill everything while another might only need 5), and that concentration matters (why does 70% ethanol in a lab matter, and not other {lower} percentages?).

The short of it really though is that those companies can't claim that you, as an average household user, will be able to completely sterilize something.  Unless you know what you are doing.