1. Saline solution is for rinsing and storing contact lenses, when you're using a heat or UV disinfection system. You also may need it for use with enzymatic cleaning tablets or cleaning/disinfecting devices. Never use saline products for cleaning and disinfection.
2. Daily cleaner is for cleaning your contact lenses. You place a few drops in the palm of your hand and carefully rub the lens for as long as directed, usually around 20 seconds, making sure to clean both sides. Use other products for rinsing and disinfection.
3. Multipurpose solution is for cleaning, rinsing, disinfecting and storing your contact lenses. Clean your lenses as you would with daily cleaner, then rinse (as long as directed) and disinfect, all with the same solution; or rinse the lenses twice, then place them in the clean lens case with solution to clean and disinfect. When you are ready to wear the lenses, rinse them again. With multipurpose solutions, no other lens care products are necessary.