text: what are sand nats,and why do they bit,also what can i use to stop the itching...?   sand gnats (silent g) are little insects you usually get from the beach or other animals like pelicans. they generally live in the sand and can be afully itchy. the best way to to treat  their bite is to have an antihistimine tablet and to apply calamine lotion. good luck i hope the itching subsides