A suit needs to be well-maintained. It is inappropriate to wear a wrinkled and frayed suit to business meetings and could make you look unprofessional.
In most cases it is a good idea to take your suit to a professional dry cleaning service. However, if you wear a suit every day for professional reasons, save money by taking care of your suit at home.
Clean the suit (both jacket and trousers) after wearing it with a natural hairbrush and let it air out overnight in a dry open space before you hang it back up in your wardrobe. Steam cleaning it from time to time to freshen up natural fabrics in a jacket is a good idea.
To do this, simply turn on the hot shower water in an enclosed bathroom to produce steam. Leave the garment hanging there for about 15 minutes and use a cloth to dab off stains.