When painful patches of ulcer form in the internal area of mouth, the condition is known as mouth sores. People who are affected by this condition have problem in eating food and speaking. The condition can be caused by physical trauma or abrasion, infection and nutrient deficiency. The affected area becomes inflamed and infected. Rubbing ice on the affected area helps a lot. Chewing clove helps in curing the ulcers. Infection can prevented by salt water rinse. Home and herbal remedies can treat the condition quite well. We will tell you about some easy remedies in this article. The 33 best home herbal remedies for mouth sores are as follows.