WE'VE PROBABLY all used a hand dryer in a public bathroom at one point or another – but you might not want to after this.
A video posted by @Itsgoneviral revealed just how dirty they really are, and it's enough to turn your stomach.
The clip, which has been viewed over 68,200, times shows an experiment to show how many germs linger when your use public hand dryers.
The user tested three different dryers by blowing the air directly on to petri dishes, as well as shaking one around in the air to stimulate drying your hands the same way.
The locations included a department store, a cinema and a petrol station.
After incubating the petri dishes for three day he took them out to see which was the most dirty, and the results might surprise you.
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The petri dish that was shook around the bathroom to stimulate shaking your hands dry looked almost perfect, there was no visible growth at all.
However the hand dryer from the same location was a whole other story, it was completely coated in mould spores, which is the last thing you want on your hands after you've washed them.
The hand dryer from the cinema toilet wasn't much better either and also has mould spores covering the sample.
Unsurprisingly the sample from the petrol station wasn't much better, as was the one from the department store.
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He said: "Based on this test, it looks like waving your hand dry is the best option."
Viewers of the clip were shocked by the resulted of the experiment, one said: "Thanks for that! Air drying it will be."
Another said: "Omg I'm washing my hands for a week."
A third wrote: "I had no idea, never again. Thanks for this!"
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