You know that moment when your phone won't charge, your laptop feels hot enough to fry an egg or your printer spits out pages so faded you can barely read them? Before you spend a dime on new gadgets ...

At the very minimum, you should be rinsing your mouth guard with lukewarm water and brushing it gently once a day. All the experts I spoke to said a standard drugstore toothbrush will do; just make ...