The Managing Mould Series. Part 3: Shower Mould - Why Bleach Won’t Help (and What Actually Works)

The shower is one of the most common places for mould to grow, and one of the most frustrating to clean. You scrub, you spray, you bleach… and yet, the black stuff keeps coming back.

Here’s the truth: bleach doesn’t kill mould. It only bleaches the surface, making it look clean while the spores continue to grow underneath.

This week, we’re busting myths and sharing what actually works to stop shower mould.

🧪 Why Bleach Isn't the Answer

• Bleach is a surface-level disinfectant.

• It can’t penetrate porous surfaces like grout or silicone, which means mould spores survive underneath.

• It also releases strong fumes and can be irritating or harmful when used regularly, especially in enclosed spaces like a bathroom.

  
  

⚠️ NEVER EVER mix bleach and vinegar – this creates toxic chlorine gas that’s dangerous to breathe and can kill.

✅ What Actually Works

✔️ Hydrogen peroxide-based cleaners: Products like Simply Clean’s No Mould are non-toxic and safe for most bathroom surfaces. They kill mould at the root without the nasty fumes.

✔️ White vinegar: Vinegar is effective at killing many types of mould. Spray it on affected areas, let it sit for at least 30 minutes, then scrub and rinse.

🧽 Shower Mould Prevention – The Real Game-Changer

The best way to deal with mould? Stop it before it starts.

Here’s how:

1. Squeegee after every shower: Get in the habit of running a squeegee over glass, tiles, and walls. It only takes 30 seconds and drastically reduces moisture.

2. Dry with a towel (if you have time): This extra step helps prevent mould from settling into grout and silicone.

3. Run the exhaust fan: Use it during and for 10–15 minutes after your shower to draw out steam.

4. Leave the shower door open when not in use: By leaving the door open when not in use, the shower will dry faster.

5. Open the window and leave the door open: Let air circulate freely to speed up drying time.

🛁 Other Tips for Long-Term Mould Control

• Clean shower walls weekly, even if they look clean! A quick weekly scrub can make all the difference.

• Replace mouldy silicone/sealant. Once mould is in the silicone/sealant it is impossible to remove.

• Keep bathroom items (like bottles and loofahs) up off the floor

• Consider switching to soap bars instead of body wash, which can feed mould

  
  

Bleach may seem like the easy option, but it’s just a band-aid. For a truly clean and healthy bathroom, choose products that kill mould at the source, and keep the moisture to a minimum every day.

Next week, we’ll bring it all together with a full Mould Prevention Toolkit: practical, affordable tips to keep your home fresh and mould-free all year round.

Keep Sparkling

Kylie x