Why Bleach and DIY Cleaning Can Make Mould Worse

Cleaning mould with bleach can cause spores to spread and mould to regrow. Learn why DIY mould cleaning often makes the problem worse.

It is natural to want to clean mould as soon as you see it.

However, bleach and many household cleaners are not effective mould treatments and can increase contamination.

DIY mould cleaning can:

• Trigger sporulation, releasing mould spores into the air

• Spread contamination to other areas

• Leave moisture behind, encouraging regrowth

• Provide nutrients that mould can use as a food source

While the surface may appear clean, underlying mould and airborne spores often remain. Without addressing moisture sources and containment, mould frequently returns, sometimes more aggressively.

Professional mould remediation focuses on safe containment, removal and verification rather than cosmetic cleaning.

Healthy Property Ltd provides professional mould testing and remediation services throughout New Zealand.