Bathroom Hand Dryers Might Be Blasting Us With Poo Particles

iStock
iStock

Using a public restroom can be a stressful experience. People inevitably shake the flimsy stall doors to check for occupancy. Soap can be missing and gastrointestinal noises can be heard. Now, a new study has found that the perils of public voiding may not end at the sink. The wall-mounted hand dryers—often believed to be a sanitary solution—could be blasting fecal bacteria right back on your hands.

Published in Applied and Environmental Microbiology, the report looked at 36 bathrooms at the University of Connecticut School of Medicine. Samples of bacterial colonies were taken on plates. A typical bathroom air sample averaged less than one colony, while plates positioned underneath a hand dryer for 30 seconds averaged 18 to 60 colonies per plate.

Researchers aren't yet sure whether the dryers are actually harboring bacteria or simply sucking it up and then blowing a concentrated amount back out: Swabs of dryer nozzles had only minimal bacteria levels. Researchers found that installing a HEPA filter in the dryers dramatically reduced their bacterial load.

Bacteria in a public bathroom are likely coming from nearby toilets, which don't have lids and can release fecal particles when flushed. So what do you do if you don't want weaponized poo on your freshly washed hands? Avoid the dryer and stick with paper towels. But for relatively healthy people who aren't immunocompromised, a few blasts of contaminated air probably won't harm you.

[h/t CBS Pittsburgh]

Amazon's Best Cyber Monday Deals on Tablets, Wireless Headphones, Kitchen Appliances, and More

Amazon
Amazon

This article contains affiliate links to products selected by our editors. Mental Floss may receive a commission for purchases made through these links.

Cyber Monday has arrived, and with it comes some amazing deals. This sale is the one to watch if you are looking to get low prices on the latest Echo Dot, Fire Tablet, video games, Instant Pots, or 4K TVs. Even if you already took advantage of sales during Black Friday or Small Business Saturday, Cyber Monday still has plenty to offer, especially on Amazon. We've compiled some the best deals out there on tech, computers, and kitchen appliances so you don't have to waste your time browsing.

Computers and tablets

Amazon

- Amazon Fire HD 10 Tablet 64GB; $120 (save $70)

- Amazon Fire HD 8 Tablet 64GB; $84 (save $35)

- HP Pavilion x360 14 Convertible 2-in-1 Laptop; $646 (save $114)

- HP Pavilion Desktop, 10th Gen Intel Core i3-10100 Processor; $469 (save $81)

- Acer Nitro 5 Gaming Laptop; $973 (save $177)

Headphones and speakers

Beats/Amazon

- Bose QuietComfort 35 II Wireless Bluetooth Headphones; $200 (save $100)

- Sony Bluetooth Noise-Canceling Wireless Headphones; $278 (save $72)

- JBL LIVE Wireless Headphones; $100 (save $30)

- JBL Charge 4 - Waterproof Portable Bluetooth Speaker; $120 (save $10)

- Bose SoundLink Color Bluetooth Speaker II; $79 (save $50)

- Powerbeats Pro Wireless Earphones; $200 (save $50)

Video Games

Sony

- Watch Dogs Legion; $30 (save $30)

- Marvel's Avengers; $27 (save $33)

- Ghost of Tsushima; $40 (save $20)

- The Last of Us Part II; $30 (save $30)

TECH, GADGETS, AND TVS

Samsung/Amazon

- Amazon Fire TV Stick; $30 (save $20)

- Echo Show 8; $65 (save $65)

- Nixplay Digital Picture Frame; $115 (save $65)

- eufy Smart Doorbell; $90 (save $30)

- Samsung 75-Inch Class Crystal 4K Smart TV; $898 (save $300)

home and Kitchen

Ninja/Amazon

- T-fal 17-Piece Cookware Set; $124 (save $56)

- Le Creuset Enameled Cast Iron Curved Round Chef's Oven; $180 (save $136)

- Ninja Foodi 10-in-1 Convection Toaster Oven; $195 (save $105)

- Roborock E4 Robot Vacuum Cleaner; $189 (save $111)

- Instant Pot Max Pressure Cooker 9 in 1; $80 (save $120)

- Shark IZ362H Cordless Anti-Allergen Lightweight Stick Vacuum; $170 (save $110)

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Hate Brown Apple Slices? Use This Simple Trick to Keep Them Fresh

Jessica Lewis, Unsplash
Jessica Lewis, Unsplash

Though they're perfectly safe to eat, brown apple slices aren't the most appealing-looking snack. If you love sliced apples but can't stand that fading color, eating them faster isn't your only option. All you need is a bowl of water and a bit of salt to keep your apples looking and tasting fresh and crisp long after you cut into them.

This trick for keeping apple slices from browning comes from Reader's Digest. Before picking up your knife, prepare a bowl of cold water. Stir in roughly half a teaspoon of salt for every cup of water and set the bowl aside until your apple slices are ready. Soak the slices for 10 minutes, drain them, and rinse them off to get rid of any excess salt. You can eat your apples right away or store them in a plastic bag or container for later. Either way, they should keep their appetizing white color for longer than they would without the saltwater soak.

Discoloration on an apple slice doesn't mean it's gone bad. When the enzymes inside an apple are exposed to air, they produce benzoquinone and melanins in a process called oxidation. This chemical reaction is behind your apple's rapid browning. Salt inhibits these enzymes, which slow down the oxidation process.

The saltwater trick is great for keeping apples looking fresh, but it only works if they've been sliced. Here's a tip for stopping your whole apples from going bad after bringing them home from the grocery store (or picking them straight from the tree).

[h/t Reader's Digest]