hen a suit is stained or gets dirty, the best solution is to consult a firm specialized in dry cleaning and ironing.
However there are some effective methods for getting rid of some stains.

Acid (e.g. vinegar, lemon…): intervene immediately by wetting the stained zone; then wash with soap and water.

Grass: brush using a brush damped in milk or in pure alcohol , then wash with soap and water.

Mud: first wait for the mud to completely dry, then brush it off.

Animal or vegetable fat: there are specific products commonly available to treat fat stains; however using a clean cloth, solvents like trichloroethylene, petrol, etc, can be used to dampen the stain.

Mineral fat (machine oils, etc.):first soften the stained area with light vegetable oil , then tampon with solvents (trichloroethylene, petrol, etc.) and finally wash with soap and water.

Solid fat (wax, paraffin-wax, etc.): scrape off the excess fat, then place the stained cloth between two sheets of absorbent paper and press gently with a hot iron, and finally, with a clean cloth, tampon with petrol.

Ink: use the adapted products that are available in shops; the spot can also be diluted with alcohol, taking care to place an absorbant paper under the cloth.

Liqueur: warm water, lightly lather with soap.

Resins: absorb the resins, tampon with a clean cloth soaked in ammonia or alcohol.

Rust: it is adviced to use special products for these stains.

Blood: wash with warm water.

Wine, coffee, fruit: if the stain is still fresh and humid, cover it with talcum powder, let it absorb and dry, finally brush; if the stain is already dry, use warm water with soap and ammonia.

When we do these operations it is necessary to let the suit dry naturally: never use the iron or other sources of heat to speed up the dying.

more information: