Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Good idea, poor long term value, no customer service

It's great until it fails... and customer service isn't availableWe purchased the Kapoosh and loved it: it worked very well for us in the first couple of months for an assortment of knives. We followed the instructions on use and never abused it. But as others have noted here, after some extended use it fails. AFter a period of use, the plastic strands that hold the knives eventually become crossed and tangled, and knives can no longer be inserted into the block.What's worse, following the provided washing instructions will ensure that the strands become even more tangled - the block was unuseable after the cleaning.Last, calling or emailing customer service will get you no where, they refuse to acknowledge the issue and support the product within the warranty period.