Dish Sponge
Mascara
Shelf Life: Three months
Avoid inflammation and infections by tossing your mascara after three months. The formula will dry out anyway, which means it won't apply as nicely as it did when it was new.
Detergent
Shelf Life: Six months to a year
If you want your clothes to be squeaky clean, discard your laundry detergent within six months to a year of opening.
Pillow
Shelf Life: One Year
Think about all the hair and body oils that seep into your pillows throughout the night. If it has been longer than a year, it's time to get some new ones. Tip: Pillow protectors can double its shelf life.
Disposable Razor
Shelf Life: One week
Razors can rust quickly, which can cause skin infections. Discard dull blades every week or so for fresh ones—which are optimal for a closer shave.
Bleach
Shelf Life: Six Months
Bleach breaks down six months after opening, so it's suggested that you get a new batch not long afterward.
Canned Ground Coffee
Shelf Life: One month
Assuming that you're keeping your ground coffee stored in the freezer, it's recommended that you get a fresh can after one month, when it starts losing its fresh flavor. But once you've taken it out, you can't put it back. Instead, store in an air-tight container.