Moving slowly, a chigger crawls along until he finds a tight spot in a body crease or where the clothing is tight. Then, about 2 hours after hitching a ride, he digs in by injecting fluid which dissolves tissue and produces a welt. About 3-6 hours later the itching begins and continues for about 3 days. Remove the chigger by scratching off with a fingernail, or apply castor oil or Vaseline. A charcoal poultice can be a help.
Banana is reported to soothe chigger bites.
Hot baths help control the itching. The Lord is a great God, and a great King above all gods. Many birds are infested with mites, and these can enter your home and get on you. Wash the affected part with tar soap. Wash clothing in boiling water or press them with a hot iron.