- Acrylic
- Adhesive residues
- Algae
- Berries
- Blood
- Blossoms
- Candle wax
- Cardboard
- Carpet adhesive
- Chewing gum
- Cigarettes
- Coatings
- Coffee
- Cola drinks
- Copper stains
- Dull spots
- Epoxy resin residues
- Felt-tip pens
- Fruit acid
- Graffiti on porous surfaces
- Graffiti paintings
- Grass
- Grease
- Grease edges by silicone grouts
- Ink
- Jam
- Joint cleaning
- Joint edge discolouration from synthetic additives to grout
- Leafage
- Lime and cement residues
- Lime efflorescence
- Milk
- Mold
- Mortar residues
- Moss
- Nail varnish
- Oil
- Paint
- Paperboard
- Pencils
- Rubber abrasion
- Rust
- Scratches
- Silicone
- Soiling inside
- Soiling outside
- Synthetic resin
- Tannins
- Tar
- Tea
- Urine
- Verdigris
- Vinegar
- Wax
- Wine
- Wood glaze
- Yellow stains in Carrara marble