Knickers, undies, panties - whatever you like to call them, they're a staple part of every woman's wardrobe. Although some can end up staying in the drawer for years because other pairs are more comfortable, this isn’t recommended.Despite regular washing, they can become real nests for bacteria since, according to a study led by Good House Institute, 10,000 germs survive each wash which can lead to the spread of infections. Washing at more than 60 efficiently gets rid of microbes Throughout the day, sweat, blood, faecal matter and even fungus can settle in your underwear. So it is advised that you wash them at 60 or even 90 to get rid of these nasties. Alternatively, there are specialised detergents with disinfectant that will kill the bacteria, even at 30, for your delicates.Letting your lingerie dry in the sun is also an effective way to get rid of the microorganisms that can’t handle UV light. But the fact still remains that the best thing you can do is regularly change your underwear.