I cannot begin to explain how grateful I am for this contact solution. This solution has seriously changed my life. Before, I used to get a lot of eye infections/pink eye but when I switched over to this solution I never get them anymore. This really cleans your contacts! But seriously, let them sit in their case only! This cannot be used with a regular contact case and these NEED to be neutralized before you insert it into your eye. Make sure all your house guests know that they need the case and do NOT put this solution directly in their eye. (Speaking from experience, lol).