Does Sunlight Kill Germs?

Posted on 28th October 2018 by jask Media

Hanging your clothes out in the sun is something many of us do regularly. Until recently, however, we assumed everyone was doing this for the same reason – to dry their clothes swiftly and effectively. Well, recently we discovered a theory that sunlight kills germs, and thus hanging out your clothes in the sunlight will not only dry them but will also rid them of any nasty, unwelcome bacteria.

Being in the industry of ridding germs, we were curious about the legitimacy of this claim. The team here at Direct Cleaning put on their investigative hats and took to find out the truth. In this article, we’re going to explore the idea of the sun killing germs and determine whether or not this is truly an effective method of eradicating them.


The Science

The science starts with ultraviolet light. Ultraviolet light is a type of electromagnetic radiation found in sunlight, among other places. UV light is comprised of various wavelengths, and one of these wavelengths – 254 nanometers – has been found by scientists to kill up to 99% germs that the wave comes into contact with!

‘Eventually kill’ may be a better turn of phrase here, however. Though the wavelength doesn’t directly kill the bacteria that it comes into contact with, what it does is alter the genetic DNA of the germ, which in turn prevents the germ from multiplying and therefore spreading. Though the initial germ continues to live, the mutations it creates are much weaker and unable to reproduce. Eventually, the germs all die out without leaving any other germs in their wake, thus ‘eradicating’ the germs.


The Implications

Does this mean I just need natural light to clean my possessions?

In a word, no.

The problem is that while this wave of ultraviolet light is found in sunlight, there’s an extremely problematic barrier standing in the way between the sun’s rays and the Earth’s bacteria – and that barrier is called Earth’s atmosphere. The vast majority of the sun’s ultraviolet light is absorbed by the Earth’s atmosphere, thus stopping it from reaching the bacteria on your clothes – or anywhere else.


How do I get rid of germs then?

There’s only one way to ensure your home is as bacteria-free as it can possibly get and that’s a high quality deep clean from a reputable cleaning company. Our deep cleans are undertaken by specialists and can remove up to 99% of bacteria and germs from commercial properties.


Here at Direct Cleaning Services, we offer an extensive range of cleaning services in a variety of different sectors. Our cleaners are fully qualified and always provide results that remain unrivalled in the Sheffield, Rotherham and Barnsley areas. So, don’t rely on the sun, rid your environment of 99% of germs with our quality cleaning services. Give our team a friendly call to learn more.