It doesn't really. "scrubbing" simply implies more intense hand washing. So if you wash you hands intensly, you are scrubbing them.
The first electric washing machine was invented by Alva J. Fisher in 1908, not in the 1920s. Fisher's invention revolutionized household chores by eliminating the need for hand scrubbing clothes.
To clean a cooling rack, you can place it in the dishwasher and run a cycle. Another way is to by hand washing with dish liquid, hot water and a scrubbing pad.
Hot water and scrubbing are key to washing hands. Enough time to allow the soap to do its job, along with the mechanical cleaning of rubbing hands together, combined with hot water will effectively wash hands.
before time they didnt have washing machines they used scrubbing boards
Victorians did not have washing machines as we know them today. While some mechanical washing devices were developed in the late 19th century, they were rudimentary and not commonly used in households. Most laundry during the Victorian era was done by hand, often involving boiling water and scrubbing clothes on washboards. The first electric washing machines were not introduced until the early 20th century.
The single most effective way to prevent illness is washing your hands with regular soap for 20 seconds, scrubbing required. (Scrubbing=friction)
Washing your hands or washing dirty objects by hand.
You stop microorganisms through different ways of cleaning. An example would be the universal precaution Hand washing. With this you get 99.9% of germ or microorganisms out your hands. Other exmaples would be sterilization, boiling, cleaning or scrubbing.
Because 1st the hand sanitizer burns and hand washing does
"i have many domestic chores around the house such as washing the dishes and scrubbing the sink."
Manual washing means washing by hand. Washing machines are not included in manual washing.
If you run the washing machine only when it is full, then it should use less water than washing it by hand. If you run the washing machine for one or two garments- you will be using more water than if washing it by hand.