PSI

I feel like it needs to be stated (again) for the record: People, by and large, soap is not inherently clean! You have to scrub with it! Soap works by allowing oils to dissolve in water and then be rinsed away. It doesn't actually kill anything by merely coming into contact with it (with the exception of some hospital soaps maybe, but even then you still have to scrub)! So scrubba dub dub!

Go read something.