So, while it’s true that freezing kills some amount of bacteria, it won’t make contaminated water safe to drink as most of the microbes will survive in freezing temperatures. By freezing your shoes, you are killing the bacteria living in your shoes and producing that bad odor. A dryer can potentially kill the vast majority of germs if it gets hot enough. Before you can kill the germs, you have to warm the surface they may be frozen on so they can be removed and killed. Clothes dryers are extremely popular in most developed countries. Instead, it essentially puts them into hibernation. Freezing generally stop the biological activities in bacterial cell and not sure to kill them. If we want to find out whether they kill bacteria and other pathogens or not, we should first have a quick look at how a dryer works. And as the food thaws, so will the moisture, which means the bacteria will have the moisture it needs to survive. Freezing may kill some of the present forms of bacteria. You'll need further tools to eliminate it completely. The odor is a result of bacteria, sweat by itself does not smell. So, this freshens them up and is supposed to get rid of some of the bacteria, or as much as washing. When you freeze the clothing the freezing temperatures of the freezer will kill off the bacteria since the bacteria cannot survive in freezing temperatures. Put your clothes inside a Ziploc bag and then place them in the freezer overnight and the bacteria will be killed and the odor should go away. A few months ago a friend told me sticking a pair of shoes in the freezer kills the microbes responsible for odor. Since freezers sit around zero to four degrees, that’s nowhere near cold enough. However, much depends on the length of the drying cycle, the fabrics and the species of bacteria. They need a good disinfecting every so often to keep them clean, and you healthy. Freezer = bacteria destroyer? Just as they can be killed relatively easily with extreme heat, such as steam, so too can extreme cold perform the same function. At extremely cold temperatures, they can freeze onto the surfaces they are on. Again: if your goal is to sterilize water, freezing is not a safe choice. MRSA, Staph and other infecting bacteria can live on towels, clothing and can contaminate the inside of washing machines. Freezing foil does not kill bacteria. Important: You must freeze your shoes for long enough that the bacteria will die… A: Nope (said with a chuckle)! But it’s important to balance the two to get the best possible wash (very high temperatures can adversely effect the cleaning power of biological detergents), and to be aware of the limitations of your clothing. And I’ve come home from a restaurant smelling of the food and found freezing got rid of odours in otherwise clean clothes. Of course the whole notion of someone putting plates in a freezer is quite silly, but is it true? Can cold kill bacteria or does it just slow their process? They offer a very convenient and relatively fast way to remove moisture from the laundry. It is also safer to breathe in than most chemical cleaners. How Does a Clothes Dryer Affect Germs? MRSA laundry contamination provides an easy route for the bacteria to spread from person to person, or to re-contaminate a person who was recently infected. Freezing does not kill germs and bacteria. MRSA, Staph and other infecting bacteria can live on towels, clothing and can contaminate the inside of washing machines. Perez found what he initially suspected, that freezing bacteria does not work to kill it . But for the most part, bacteria may simply freeze the growth state and then continue to grow once food has been thawed. If your first instinct after reading this is to double down on detergent, don’t. Your favorite jeans aren’t superhuman. 135°F is the minimum temperature at which a dryer can significantly reduce the number of bacteria on your clothes. The freezing method of exterminating these bugs is just what it says, freezing. To kill bacteria, you typically have to reach 80 degrees below freezing. If your shoes smell, freeze them. Freezing and thawing also kill bacteria to an extent but not one hundred percent.