Boogers are formed by dry nasal secretions. Under normal circumstances, the nasal cavity secretes substances for moistening the air every day, so it is normal for everyone to have boogers. When you have a cold or vestibular infection, the secretions will increase and so will the boogers. Don’t use your fingers to dig the boogers because they can cause damage to the mucous membrane of the nasal cavity, resulting in bleeding and infection. Fingers often stimulate the skin of the nasal vestibule, which can also cause chronic vestibulitis and nasal follicle infection, resulting in more and more boogers. Therefore, if you dig your nose frequently, you will have more and more nasal stools if you have nasal vestibulitis. When a patient has a nasal stool, it is recommended to rinse the nasal cavity with saline to moisten the stool and discharge it on your own.