How to Make Your Own Natural Mold & Mildew Killer With Grapefruit Seed Extract

Grapefruit seed extract, or GSE, provides a natural, non-chemical way to get rid of mold and mildew around the home.
Grapefruit seed extract can safely combat mold and mildew.Grapefruit seed extract can safely combat mold and mildew.
It also acts as a natural disinfectant and is safe to use around people, pets and plants. When mixed with water and put into a spray bottle, GSE liquid can disinfect bathroom sinks and tiles and just about anything else that mold, mildew or gunky buildup may attack.

Step 1

Remove the sprayer top from a clean spray bottle. Fill the bottle ¾ of the way with tap water. Squirt approximately 1 drop of grapefruit seed extract oil per 2 ounces of water in the bottle, or 8 drops of oil in a 16-ounce spray bottle. Add a few more drops if you suspect the mold or mildew may be stubborn to remove. Replace the spray top on the bottle and seal tightly. Shake the bottle to mix the liquids.

Step 2

Turn the spray nozzle to one of the powerful stream settings, such as jet or stream. Spray the grapefruit seed mixture directly onto the mold or mildew, using enough spray to saturate the area thoroughly. Allow the spray to soak in place; it isn't necessary to rinse.

Step 3

Reexamine the mildewed areas after an hour or so. Wipe with a damp, clean sponge, if desired, though wiping is unnecessary. Spray the grapefruit seed extract mixture around all areas where mold and mildew occur, as it will help prevent the problems from recurring.

Things You Will Need

  • Grapefruit seed extract (liquid)
  • Water
  • Spray bottle

About the Author

Kathy Adams is an award-winning journalist and freelance writer who traveled the world handling numerous duties for music artists. She writes travel and budgeting tips and destination guides for USA Today, Travelocity and ForRent, among others. She enjoys exploring foreign locales and hiking off the beaten path stateside, snapping pics of wildlife and nature instead of selfies.