There are two big disadvantage of K-Cup Coffee Makers!
The first con is, they are very expensive. And secondly, they are non-recyclable.
With a reusable K-Cup filter you can kill two birds with one stone. And on top of it, you can use freshly ground coffee for better tasting coffee!
Keurig 2.0 filters may not fit in older machines so make sure your machine is compatible.
There are also K-Cups that use a durable gold tone filter like the SwiftBrew 24k Gold Tone Coffee Filter (click the image to get more detailed information).