The amount used and technique for spraying probably matter. A careful cleaner may use only a very small amount as needed while some seem to think it is necessa

The amount used and technique for spraying probably matter. A careful cleaner may use only a very small amount as needed while some seem to think it is necessary to slather everything with concentrated soaps that leave a strong smell. We are still just coming to terms with aerosols as high powered forced air hand dryers have shown, and those were intended to minimize spread of contaminants.