What is foil over door knobs?

Foil over door knobs can be an effective way to prevent the spread of germs and viruses, particularly during times of illness outbreaks such as the COVID-19 pandemic. By placing a piece of foil over a door knob, the foil can act as a barrier between the hands of people using the door and the surface of the knob, which may be contaminated with germs. The foil can be easily removed and disposed of, and replaced with a new piece of foil as needed. While foil over door knobs can be helpful in preventing the spread of germs, it is still important to practice good hygiene habits, such as washing hands regularly and avoiding touching one's face.