Dirt type

Cleaning agent

 Comments

Algae

Specialised cleaning agent:
algae remover, cleaning agent containing chlorine

Bitumen

 Organic solvents

E.g. petrol, acetone or scouring pastes. Remove coarse dirt using wooden scraper if possible

Pencil strokes

Mechanical cleaning

Etching, scouring powder

Blood

Alkaline cleaning agent – weak

Do not use hot water!

Expansion joints, residues

Mechanical cleaning

Remove coarse dirt with a wooden spatula if possible

Epoxy resins

Scouring paste, special cleaner

Vomit

Alkaline cleaners - weak

Excrements

Alkaline cleaners - weak

Paint splotches

Organic solvents

e.g. petrol, acetone or "stripping pastes".

Remove coarse dirt with a wooden spatula if possible

Grease

Alkaline cleaners - strong

For extreme contamination: Solvents

Felt-tip pen

Alkaline cleaners, organic solvents

Joints, dirty

Alkaline cleaner

support mechanically, e.g. with brush

Text

Rubber abrasion

Mechanical cleaning

Etching or scouring powder

Coffee

Alkaline cleaners - weak

Lime deposits

Acidic cleaner

Lime soap residues

Acidic cleaners - weak

Chewing gum (dried)

Spray for freezing

Available in pharmacies; ice the dried residue, then tap

Lipstick

Alkaline cleaners - weak

Metal abrasion

Acidic cleaner

mechanical support (e.g. brush)

Moss

Special cleaner: moss remover

Nail Polish

z. e.g. acetone

Oil

Alkaline cleaners - strong

For extreme contamination: Solvents

Plant residues

Special cleaner:
Algae or moss remover

Rust deposits

Acidic cleaner

Red wine

Alkaline cleaners

Mildew, black

Chlorinated cleaners, mould remover

Tar

Organic solvents

z. e.g. petrol, acetone or "stripping pastes".

Remove coarse dirt with a wooden spatula if possible

Urinary calculus

Acidic cleaner

Wax

Hot water

Alkaline cleaners - strong

For extreme contamination: solvents, working pastes

Water colours and other water-soluble colouring substances

Water, alkaline cleaners - weak
Mechanical cleaning