Product review (5 stars): These filters arrived yesterday, and I replaced another brand ...
These filters arrived yesterday, and I replaced another brand of filter with the Waterdrop.  Included in the box are instructions for replacement.  I followed them, and the resulting water is clear and taste-less.  I would suggest to many of the negative reviewers that they perhaps failed to read the instructions.  They cover "weird sounds", "leaking", and even how to reset your refrigerator filter light.  Honestly, if these filters DON'T work, I would be surprised.