Product review (4 stars): Every 3 months...
Easy to use product.  Only real negative is "suggestion" to run 2 gal of water through the filter before actual consumption.  Ever stand at the water dispenser of your refrigerator dispensing 2 gal of water (sixteen 8oz. glasses)?  I run 16oz. through it.  But there are no alternatives to the product if you want to filter your water for ice/drinking.