![Doorknobs, handrails and shopping trolleys should be coated in copper to prevent spread of Covid-19 | Daily Mail Online Doorknobs, handrails and shopping trolleys should be coated in copper to prevent spread of Covid-19 | Daily Mail Online](https://i.dailymail.co.uk/1s/2020/05/30/09/29003272-8371893-image-a-1_1590828297933.jpg)
Doorknobs, handrails and shopping trolleys should be coated in copper to prevent spread of Covid-19 | Daily Mail Online
![Brass Door Opener Keychain Tool (Pack of 3) - Touchless Germ Free Antimicrobial Key for Opening Handles - Brass Door Opener Keychain Tool (Pack of 3) - Touchless Germ Free Antimicrobial Key for Opening Handles -](https://m.media-amazon.com/images/I/71AukNdc4sL.jpg)
Brass Door Opener Keychain Tool (Pack of 3) - Touchless Germ Free Antimicrobial Key for Opening Handles -
Ryan's Believe It Or Not - TRIVIA 0002180: Did you know that brass doorknobs automatically disinfect themselves every after 8-12 hours — they have this property from metal ions called "oligodynamic effect"
![TIL that brass doorknobs (or any other brass objects) sterilise themselves after about 8h since bacteria have a hard time surviving on brass. This is called the Oligodynamic Effect. : r/todayilearned TIL that brass doorknobs (or any other brass objects) sterilise themselves after about 8h since bacteria have a hard time surviving on brass. This is called the Oligodynamic Effect. : r/todayilearned](https://external-preview.redd.it/e67AARJxz2DNY4mePolOc-WXaQrB6fdMvo7gj7BT1F4.jpg?auto=webp&s=6935d622714278361a2578bc5ca894e31f9ed85f)
TIL that brass doorknobs (or any other brass objects) sterilise themselves after about 8h since bacteria have a hard time surviving on brass. This is called the Oligodynamic Effect. : r/todayilearned
![Kwikset Tustin Polished Brass Privacy Bed/Bath Door Handle Featuring Microban Antimicrobial Technology with Lock 730TNL 3 RCAL RCS - The Home Depot Kwikset Tustin Polished Brass Privacy Bed/Bath Door Handle Featuring Microban Antimicrobial Technology with Lock 730TNL 3 RCAL RCS - The Home Depot](https://images.thdstatic.com/productImages/2f842fd6-095c-449f-8fba-38797ac851d2/svn/kwikset-privacy-door-handles-730tnl-3-rcal-rcs-e1_600.jpg)