Freezers make it hard for microbes to live, but some germs still persist. If left unchecked long enough, freezer bacteria will begin to contaminate your food. The frustrating thing is, the only way to truly remove nasty germs is to defrost the machine entirely. Unplug the machine and leave the freezer door open. Yes, that means dirty ice is going to melt all over your kitchen floor. Soak up this water by placing towels at the base of the fridge, and be sure you run these towels through the laundry. The last thing you want is to dry your dishes with a towel covered in freezer germs.