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Why cleaners must never be mixed

Why cleaners must never be mixed — principles, examples, limitations and the next tool step.

The key rule

Do not combine products even when each is sold for cleaning. Reactions may create irritating or toxic gases, splashes or surface damage.

Step-by-step process

  1. Identify the surface, soil and manufacturer limits.
  2. Prepare ventilation, gloves and separate tools.
  3. Spot-test and use the smallest effective amount.
  4. Remove residue, dry and assess before repeating.

Limitations

Unknown substances, strong fumes, health symptoms, electrical hazards, extensive mould or biological contamination require stopping and seeking appropriate help.