In this task, you're given a review from Amazon's food products. Your task is to generate a short summary of the given review in the input. Note that you don't need to write a complete sentence as a summary.

I was anxious to try these cups since they seemed to be sealed like the original K-Cups, but was very disappointed in the product. Though the cups came with no instructions, it was apparent that you just put the filter in, add coffee, then pop the lid on. Trouble is, the filters size and shape indicate they should hang over the outside edge of the cup, but when doing that I found it impossible to seal the cups. So I had to tuck the filter inside to be able to close and seal the lid. After doing that and trying, the coffee ran VERY slow though the K-Cup and after only about three cups, the Keurig machine seemed to get clogged up and stop working. I cleaned out with vinegar and tried again, but same result. I ended up throwing these away as it didn't seem worth the effort to return them. NOT a good product!
Did not work well - clogged my machine