To reduce the risk of infection when using contact lenses, the American Optometric Association recommends the following: don’t wash your hands with a creamy soap that can leave a film on lenses; never make your own saline solution, which can damage lenses; don’t put lenses in your mouth to moisten them; don’t store or wash lenses in tap water; don’t let anyone else wear your lenses; and
don’t wear contact lenses to sleep if you’ve been in a hot tub, pool, lake, or ocean. American Optometric Association, November 2022