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Microfibre: dry, damp and wet method

When to use what — and why microfibre works

2026-06-14·10 min reading

Microfibre cleans through mechanical scraping, static electricity, and capillary action — often with water alone, no chemicals. The three moisture states (dry, damp, wet) determine what the cloth can do; but it is the system around the cloth — pre-wetting, one cloth per surface, clean-to-dirty direction, and correct washing — that prevents moving dirt and bacteria around.

Introduction

Microfibre cleans through a combination of mechanical scrubbing, static electricity and capillary suction. This means that for many tasks it can clean with plain water — without chemicals. Grease and soil stick in the fibres' cavities and are released only by washing at high temperature.

Why microfibre works — the fibre structure

A microfibre is far thinner than a human hair or cotton fibre — typically less than about 1 dtex. It is often made as a two-component fibre of polyester and polyamide, which is 'split' (split-fibre), so each thread becomes many wedge-shaped fibres with sharp edges and small channels between them. The sharp edges scrape dirt loose mechanically, and the channels suck up liquid and particles through capillary action — the same principle as when a sponge draws water. The enormous total surface area is why a damp microfibre cloth can pick up dirt that a cotton cloth just pushes around.

The three moisture states

ConditionUsed for
DryHair, dust and loose particles. Traps dust electrostatically without stirring it up (dry mop/dry cloth).
DampThe standard method for daily surface cleaning. The cloth must not drip, but must not have dry patches either.
WetMore stubborn dirt and coarser tasks.
Drydust · hairDampdaily faceWetingrained dirtrule of thumb: ~2–2.5 × dry weightmust not drip — nor leave dry patchesrising damp →
Fig. The three moisture states: dry to dust damp (~2–2.5 × dry weight) for daily cleaning wet for stubborn dirt.

Pre-wetting and mopping systems

In professional cleaning, a pre-dampening or opening system is typically used today: cloths and mops are dampened ("charged") with the correct amount of working solution beforehand — in a box, a bucket or a washing machine with dosed uptake — instead of dipping the same cloth in a bucket again and again. The advantages are that moisture content becomes uniform, chemistry is dosed precisely, and you avoid the classic re-soiling from a bucket that becomes dirtier and dirtier as the day goes on. Single-use mops (replaced after one room/surface and sent for washing) are standard precisely for that reason.

One cloth/mop per surface — and clean before dirty

Two basic rules determine whether cleaning removes dirt or just moves it:

  • 01One cloth or mop per surface/room — when the cloth has become soiled, it is changed; it is not dipped back into a common bucket. This prevents bacteria from one place spreading to the next.
  • 02Clean before dirty — work from the cleanest surfaces towards the most soiled, and from patient-adjacent/contact surfaces towards toilet/floor last. Never the other way.
  • 03Systematic direction — clean in overlapping strokes (e.g. S-pattern), so the entire surface is covered without driving over what has just been cleaned.

Choose method according to the task

AssignmentToolHumidity level
Dust on free surfaces, screens, shelvesDry microfibre clothDry
Daily wiping of tables and contact surfacesMicrofibre clothDamp
Daily floor cleaningWaterlogged disposable mopDamp
Stuck dirt, spillageMikrofiberklud/moppeWet
Patient-proximal surfaces (healthcare sector)Clean cloth/mop per unit — possibly followed by disinfection where indicatedMoist, after NIR

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