Instruct: Classify Amazon reviews into positive or negative sentiment
Query: liqui-kelp

I did not like this at all. The product is like dirty water. How do I know that it is Kelp and not some dirt that some just says that it is kelp. It is gross and I wonder how sanitary it is to drink this. I can not comment on its effect since its too gross to drink and I won't. Wish I can return it but shipping is probably more than the refund. I would not recommend this.