Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Nice idea, poor execution

I bought this on the recommendation of a famous gardener (his DVD), but was very disappointed. The problem is that the sandals kept coming off, which caused a lot of frustration. No matter how I tied it down, it would eventually come loose and fall off. It's a nice idea, but this particular version is a waste of money. Instead, I recommend the standard aerator too, the Yard Butler M-7C Lawn Spike Aerator, also available here on Amazon. That is very effective and a much better value over this particular product.