1. Clear-up cold sores
   Apply hydrogen peroxide to the affected area with a cotton wool ball, or for the inside of your mouth, swish some around for 30 seconds to clean and disinfect.
2. Hydrogen peroxide for cleaning ears
   Dip a cotton bud or Q-tip in undiluted hydrogen peroxide and use it to clear up any ear wax outside of your ear canal. Be careful not to put the Q-tip inside your ear canal.
3. Help stop sinus infections
   Hydrogen peroxide diluted in water can be used as you would a drug-store sinus spray. Use it in a dedicated nasal spray container to help treat sinus infections.
4. Clean contact lenses
   There are many contact lens cleaners available in stores, and they can get pricey, but did you know one of the key active ingredients in them is hydrogen peroxide? Save yourself some cash and DIY your own.
5. Help your indoor plants to thrive
   Pour a small amount of hydrogen peroxide onto the topsoil of your plant to remove any harmful fungus which may be growing on them and inhibiting their growth – especially useful if you live in an apartment without much outdoor light.
6. Or grow your own plants
   Hydrogen peroxide aerates the soil and will also help your seedlings to germinate.
7. Or boot mushrooms
   If you grow mushrooms, a few drops of hydrogen peroxide added to fruiting chambers will add much-needed oxygen to support your growing mushrooms.
8. Remove tea and coffee stains from cups and mugs
   To tackle stained coffee and teacups or mugs, mix 1 tablespoon of baking soda with enough hydrogen peroxide to make a thick paste. Cover the stains in the paste and sit for about 10 minutes.
9. Brighten tired white underwear
   Whether it’s a gray-before-its-time bra or that oh-so-comfy pair of tighty whiteys that you don’t want to part with, you can brighten up dull-white underwear with hydrogen peroxide. Add a cup to your white load in the machine, or for really greying whites, soak them in warm water mixed with a cup of hydrogen peroxide, and let them soak for a few hours.
10. Clean children’s toys
    It’s a bad idea to use commercial cleaners on anything your child is likely to come into regular contact with (or put in their mouth) as they can be toxic. Wipe toys and play areas clean with hydrogen peroxide instead, for a safe natural germ killer.
11. Brighten fingernails
    Cheaper than a manicure, soak your nails in hydrogen peroxide for 10 minutes to lighten and brighten them – just remember to wash your hands thoroughly afterward.
12. Make your pet fish happier
    Because it’s a natural cleaner, it’s safe to clean out fish bowls, and even larger aquariums, with hydrogen peroxide.
13. Clean up your koi pond or backyard water feature
    You can help control algae in any water feature by 1/4 cup of 3 percent hydrogen peroxide will clear the algae from a 25-gallon pond.
14. Get rid of mattress mites
    Next time you change your sheets, spray some hydrogen peroxide over your mattress to remove all of those tiny mites that are invisible to the naked eye. Let your mattress air out and dry before you replace the sheets.
15. Clean up after your four-legged friend
    Hydrogen peroxide mixed with water will clean up the mess, kill germs, and remove the unpleasant smell on the floor when your fur baby is toilet training or if they have an accident.
16. Get a fresher cat litter box
    Once you have removed cat litter, wash and dry the box before spraying with hydrogen peroxide. Allow drying time before replacing the litter.
17. Remove the smell from your garbage can
    Spraying the inside of your garbage can with hydrogen peroxide the next time you take out the trash will help keep germs away, and keep your neighbors from running for the hills when they pass downwind of your home.
18. Treat blackheads
    Before you undertake some drastic self-surgery with a metal comedone remover, did you know that hydrogen peroxide can be used to get rid of blackheads and whiteheads?

    As you probably already know, these kinds of blemishes happen when the skin gets clogged and blocked with excess oil. Applying hydrogen peroxide dissolves the blackheads and treats the area to clear bacteria at the same time.

    The best way to use it is as an overnight treatment: Mix equal parts of hydrogen peroxide with water and soak a piece of cotton wool. Apply the mixture to the affected area with the cotton wool and leave it on the skin overnight.

    Rinse the following morning. Repeat nightly and you should see a difference within a few weeks.

19. Whiten old, stained porcelain
    If your porcelain sink or bath has started yellowing, you can use a mixture of hydrogen peroxide and baking soda applied as a paste to whiten it up. For really stubborn marks, you might need to repeat the treatment.

RELATED: How to Clean with Rubbing Alcohol

Knowing how to clean with hydrogen peroxide will change the game for your home cleaning.

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