Chemical safety
Clean from cleaner to dirtier areas
Work from cleaner and higher surfaces toward dirtier ones, leaving the toilet until last.
Last reviewed: 2026-09-12
Why it matters
Cleaning a toilet first can carry dirt and germs on tools to kitchen counters or the dining table.
Wrong action
Clean the toilet first, then use the same tool on the kitchen and dining table.
Correct action
Start with cleaner and higher areas, leave the dirtiest until last, and change contaminated tools.
What to do
- Plan the rooms and surfaces, starting with high and relatively clean areas.
- Follow one direction and finish kitchen counters and the dining table before entering the toilet area.
- Clean the toilet last, then replace any contaminated cloth, mop head, or cleaning solution.
If something happens
If a contaminated tool touched a food surface, stop using it and clean and disinfect again with fresh tools.
Sources and review
- Centre for Health Protection — Recommendations on Environmental Hygiene
Last reviewed: 2026-09-12
This page provides general home-safety information and does not replace medical, legal, electrical, or other professional advice.