There are some things that are easy enough to figure out when they expire—like eggs, milk, and food with clearly marked expiration dates. These things described below do not have listed expiration dates, but will lose effectiveness through time.
Natural loofahs and sponges can begin to breed bacteria in only a couple of weeks. Plastic mesh loofahs are safe for a little longer, around up to 8 weeks. So rinse and dry your loofah after every use and replace natural loofahs every couple of weeks and plastic mesh ones every other month.
Ripe potatoes should be good for 2 to 3 months. Do not eat them when they are green—this means they are unripe or sprouted—this means they are overripe. Keep your potatoes in a dark and cool place. If you really want to make use of your potatoes, check out these food made better with potato chips.
Batteries begin to expire as soon as they’re manufactured. Hence, the expiration date on them is based on this. Shelf life changes between sizes and types of batteries, as well as their storage. So store your batteries in a room temperature and dry place and always check their date.
Bleach loses some of its effectiveness in 3 months. So every few months or so, throw away your bleach. The same goes for household disinfectants, like Lysol.
#5 Smoke Detectors
Carbon monoxide and smoke detectors cease working after 10 years, even when you replace their batteries. Most should have their manufacture or expiration dates on them, but if you move, you wouldn’t know how old they are. It is just safer to replace them.
Most sunscreen is at its full strength for about 3 years. So throw your sunscreen as soon as it is past its expiration date. If it does not have an expiration date, take note of when you bought it.
Unopened liquors will stay good indefinitely. But once opened, they will lose potency and taste in a year. So, keep both unopened and opened liquor bottles in a cool place.
#8 Dried Spices
Dried spices typically last for 2 to 3 years,but this depends on what kind, how they are stored, and how they were dried.
#9 Moisturizers and Lotions
Moisturizers and lotions inside a tube should be good for a few years when you open it. Afterwards, it will begin to dry out and cease their effectiveness. However, moisturizers and lotions in a jar wherein you use your fingers to apply, can be a breeding ground for bacteria. Hence, clean your hands when you apply moisturizers and lotions and throw away after a year or so.
#10 Fire Extinguishers
Most fire extinguishers expire within 5 to 15 years depending on its type. However, if there are cracks on the hose or pressure, it can affect the way it functions. So check the pressure in the gauge and make sure to refill after every use.
#11 Hydrogen Peroxide
As soon as hydrogen peroxide is opened, it can only last a few months before it turns into water (and become ineffective, of course). If unopened, it should be thrown away after a year. You will get that it is bad when it ceases fizzing. The solution to this is to get a new first aid kid every few months, particularly if it has been used.
#12 Car Seats
Most car seats expire within 6 to 10 years of its manufacturing date, which should be stamped on its side or bottom. This is because they are made from materials that contract and expand through time and temperature changes. Damages or car crashes can affect the safety of the seat, so usually it’s not a good idea to buy a used model. So check your car seats for the expiration date and do not buy used versions unless you already know their history.
Lipstick exposed to air begins to dry out and change consistency about 2 years. You should figure this out from its texture and smell. There are a couple of products that have hidden expiration dates. Toss those lipsticks after two years or their expiration date. Even give them a good cleaning once in a while.
Bacteria can grow in an open mascara tube within 3 months of usage. This can cause pinkeye and other eye infections. In addition, if you keep on pumping the mascara, it can dry out. So every couple of months, buy new mascara and do not share with anyone else.
#15 Insect Repellent
Around 2 years from its manufacturing date, insect repellent loses its effectiveness, which should be on the bottle. Just get a new spray every couple of years or so.