Target has Boston One Step Liquid Enzymatic Cleaner - 12ct on sale for $7.55.

- The easiest way to remove protein deposits weekly from your RGP lenses just got easier. ComfortHold Dispenser: Bigger, etched tab is easier to grasp. Larger bulb is easier to hold. Curved bulb is easier to squeeze. Convenient liquid works together with the disinfecting step, right in your lens case eliminating the need for tablets and vials. Preservative-free.

Sterile single-use dispensers. 12 week supply. Removes protein. For gas permeable contact lenses.