Immerse immediately in a biological detergent in lukewarm water, allow to soak for a while, then wash as normal. If stains remain dab with neat ammonia, rinsing off immediately. Wash as normal. Alternatively, in 250 ml (half a pint) of warm water, dissolve 15 ml (one tablespoon) of white distilled vinegar and sponge stain with this mixture. Again wash article as normal.
 

 
Dissolve 15 ml (one tablespoon) of white distilled vinegar in 250 ml (half a pint) of warm water and sponge carefully, then with cold water, blotting off excess. Otherwise take to dry-cleaners.