Bleach Safety: Mixing, Ventilation and Contact Time
For Bleach Safety, start with the surface, the type of dirt, and the safety checks. Bleach safety starts with one strict rule: do not mix bleach with other cleaners. Use bleach only where the surface and product label allow it, ventilate the area, and follow the stated dilution and contact-time instructions.
Do not mix bleach
Do not mix household bleach with ammonia, acids, vinegar, toilet cleaners, descalers, or other disinfectants. Dangerous vapours can be released.
If you need to switch products, rinse the surface thoroughly and allow ventilation before changing approach.
Use bleach only where suitable
- Read the label before use.
- Ventilate the room.
- Wear gloves if the label or situation calls for it.
- Clean visible dirt first unless the product is labelled for one-step cleaning and disinfecting.
- Keep the surface wet for the stated contact time.
- Prepare diluted solutions only as directed and do not store homemade diluted bleach for long-term use.
Surfaces where bleach may be a poor choice
- Natural stone and delicate finishes.
- Coloured fabrics and upholstery.
- Metals that can corrode.
- Porous materials where moisture cannot dry properly.