I tried to remove black marks from wood floors with Bar Keeper’s Friend recently, and I’m happy to report it worked pretty well.
Here’s the story: I had some mysterious black ring-shaped marks on my hardwood floors. I traced them to metal ends of furniture legs. The long-term solution is to put the furniture on leg cups, but one still has to contend with the damage.
The pros use a floor bleach whose active ingredient is oxalic acid, but finding it is hard, and finding it in household quantities is harder. But there’s a cheap, readily available household alternative: Bar Keeper’s Friend. It costs a couple of dollars and you can buy it at big-box stores like Home Depot, hardware stores, grocery stores, and even some discount stores. It’s usually in the cleaning aisle next to the Comet. It’s good stuff to have on hand anyway, because it does a great job of cleaning up pretty much anything you’d use Comet on, but it literally eats rust spots for lunch so it’ll take care of chores Comet doesn’t.
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David Farquhar is a computer security professional, entrepreneur, and author. He has written professionally about computers since 1991, so he was writing about retro computers when they were still new. He has been working in IT professionally since 1994 and has specialized in vulnerability management since 2013. He holds Security+ and CISSP certifications. Today he blogs five times a week, mostly about retro computers and retro gaming covering the time period from 1975 to 2000.
