Product review (5 stars): Much better then manufacture recommended.
When my PUR water filter needed to be replaced, I ordered on Amazon, the recommended one from Whirlpool (every drop), despite the many negative reviews. Unfortunately the reviews were correct, loud noise, slow water dispense rate etc, additionally my ice cube dispensing unit stopped working. I suspect the label should have been last drop and not every drop. The 2-Pack Waterdrop units fixed my ice cub dispenser operation and have enabled my continued usage of fresh water from my refrigerator for 1/4 the cost. These units work fine.