Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: Works great!!

I have used this product for 7 years and love it. I have never had a problem using them and will continue to do so. Mine are starting to get a little brittle and I am having to replace them, but for $6.00 it's well worth not having to climb on my roof and install lights. I do not have gutters and just attach them to my shingles, so maybe they work work better that way.