Perhaps some did not get enough science in High School.

The 2 facts I remember well are: Water is the Universal Solvent. https://water.usgs.gov/edu/solvent.html

And Dilution is everything. The Universe dilutes, poisons dilute.

When doing anything with water, air, dirt, I constantly think about dilution. We will dilute, no matter how big the Pyramid.

But there is always an atom here and there, even in your 'clean' room prints.