Product review (3 stars): Adequate needs upkeep
This filter will work longer than many reviews have indicated. What keeps it fresher is to wash your tank, basin and filter in vinegar. Pour a little vinegar in the basin, tank and fill with water. Dump this water over your filter while rinsing. Rinse everything with cold water. This should be done once a week. It helps to turn the filter over each time you fill up. Cheap store vinegar will cost $2 and should get you through one winter season.