Chances are the glass on your toaster oven is covered in a golden-brown haze, which makes it tough to see if your bagel is just starting to brown or burning to a crisp. Maybe you notice crumbs ...

Even if you don’t use it often, there’s no doubt crumbs have collected in the tray at the bottom of your pop-up toaster. Toasted bits of bread and bagels from your daily breakfast are bound to fall ...

If you're a keen cook, the residue from cooking fats and grease that's arisen from making your favorite dishes can land on appliances that aren't anywhere near the stove, such as your toaster oven.