This product should not be sold over the counter. I've only used daily contacts, but the doctor switched me to a better monthly contact. I bought this thinking it was the same as contact solution you soak your contacts in overnight and in a contact lens case. I read the instructions and thought the included lens was a free lens case (instructions to not use in a regular lens case should be in the instructions--- not just say in the instructions to use the included case--- make this very clear). I put the contacts in this morning and my eyes burned like crazy. I rinsed them with water and tried the other eye and still burned. I rinsed my eyes out with water and used eye drops. My eyes are so red and have been this way for hours now. They still have a burning sensation. This product should be a prescription product--- only available through the eye doctor who gives very clear instructions and warnings. This product was in the same area as regular saline products, right next to it to be exact. The only reason I got this is because the saline solution said it wasn't for disinfecting, so I opted for this one instead. Big mistake!