HOMEMADE BATHROOM CLEANING SPRAY
August 7, 2026
I keep this simple hydrogen peroxide spray specifically for the bathroom. While my everyday cleaning spray handles most of the surfaces around our home, I like having a separate bottle for areas like the toilet, inside the bathroom sinks, and the shower.
One of my favorite ways to use it is as an everyday shower spray. After showering, I lightly spray down the shower walls and other water-safe surfaces to help keep everyday buildup and mildew from getting a chance to take over between deeper cleanings. I also use it on the toilet and inside sinks before I scrub them.
It’s an incredibly simple recipe—just hydrogen peroxide and water—and gives me one easy bottle for some of the areas in the bathroom that need a little extra attention.
WHAT DO THE INGREDIENTS DO
3% HYDROGEN PEROXIDE
Hydrogen peroxide is an oxidizing agent that I like using for some of the messier areas of the bathroom. Household hydrogen peroxide is commonly sold as a 3% solution, but this recipe dilutes it with water for my everyday bathroom cleaning routine.
It’s important to remember that concentration matters when you’re specifically trying to disinfect. This homemade dilution isn’t the same as an EPA-registered disinfectant used according to its tested directions.
WATER
Water dilutes the 3% hydrogen peroxide into a gentler solution for the way I use this spray around the bathroom.
A SIMPLE FORMULA
This bathroom spray is intentionally simple: hydrogen peroxide and water, with no added fragrance, dyes, or unnecessary extras.
Commercial bathroom cleaners can contain surfactants, fragrances, acids, preservatives, or registered disinfecting ingredients designed to handle several jobs at once. This homemade version isn’t meant to do everything a commercial bathroom cleaner can. I like it because I know exactly what’s in the bottle, it’s easy to make, and it works well for the way I clean our toilets and bathroom sinks.
For most of the house I use my everyday cleaning spray, and I keep this simple peroxide spray just for the bathroom jobs where I prefer something different.
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Bathroom Cleaning Spray
EQUITMENT
- 16-ounce spray bottle amber glass
- Measuring cup
INGREDIENTS
- 1 cup 3% hydrogen peroxide
- water
DIRECTIONS
- Add 3% hydrogen peroxide to a clean, opaque 16-ounce spray bottle.
- Fill most of the remaining bottle with water.
- Replace the sprayer and gently swirl to combine.
- Label the bottle clearly.
HOW TO USE
For Toilets + Sinks
Spray the surface and let it sit briefly while you work on another area of the bathroom. Scrub or wipe clean as needed. For bathroom sinks, I like to spray the basin before scrubbing and rinsing everything clean.
As an Everyday Shower Spray
After showering, lightly mist the shower walls and other water-safe surfaces. I use it regularly between deeper cleanings to help prevent soap residue and mildew buildup from becoming a bigger job later.
Good ventilation still matters—running the bathroom fan and allowing the shower to dry helps make the bathroom less hospitable to mildew in the first place.
Always spot test before using hydrogen peroxide on an unfamiliar material or finish.
HOW TO STORE IT
Store the spray tightly closed in an opaque or light-resistant bottle somewhere cool and away from direct sunlight.
Hydrogen peroxide gradually breaks down when exposed to light, so the container matters more with this recipe than it does with many of my other homemade cleaners.
Keep the bottle clearly labeled and out of reach of children and pets.
MACHINES BEHAVE DIFFERENTLY
Dishwashers, water hardness, wash temperatures, and cycles vary quite a bit from one home to another. I always recommend trying the recipe with your normal load and adjusting the amount if needed.
FAQs
Can I Use This as a Daily Shower Spray?
Yes, that’s actually one of the main ways I use it. I lightly spray the shower after use to help stay ahead of everyday residue and mildew buildup between deeper cleanings.
I still recommend good bathroom ventilation and allowing the shower to dry as much as possible, since controlling moisture is one of the most important parts of preventing mildew.
Will This Remove Existing Mold or Mildew?
I use this recipe primarily as part of my regular cleaning routine rather than as a treatment for a significant mold problem. If you already have substantial mold or mildew growth, it may need a more thorough cleaning or a product specifically intended for that job.
Do I Have to Rinse the Shower After Spraying?
For my everyday shower routine, I use a light mist rather than saturating the surface. If you’re using more of the cleaner while actively scrubbing the shower, rinse the surface afterward.
Always follow the care instructions for your particular shower material.
Does This Disinfect?
I don’t make a disinfecting claim for this diluted homemade recipe. Hydrogen-peroxide disinfectants can be effective, but disinfecting depends on the concentration, formulation, surface, and how long the product remains on the surface wet.
Why Does It Need an Opaque Bottle?
Light speeds up the breakdown of hydrogen peroxide. Keeping it in an opaque or light-resistant bottle helps protect the peroxide while it’s being stored.
