Every review here includes a "fix" to get this product to work. This should not have made it out of product development. No reviewer should give 3-5 stars for a product that needs a fix to get it to work. Good concepts poorly executed do not deserve stars.Out of the box, this filter will deliver very weak coffee (even on the strong setting) AND will leave a big mess of coffee grounds and water in and around your machine. Keurig should recall this product as it simply doesn't work without a fix. Don't buy it. It is not worth the hassle or the mess.