I HAVE USED THIS FILTER FOR TWO YEARS NOW.. I'M VERY HAPPY WITH IT. THE ONLY COMMENT TH FILTER ONLY ASTS A WEEK. IT AND THE FOAM PIECE GET DIRTY AND ......YUCKY. I HAVE TO CHANGE THE FILTER EVERY WEEK WHICH IS COSTLY.  I WASH THE FOAM AND TRY TO GET TWO OR MAYBE THREE USES OUT OF IT BEFORE DISPOSING IT.