Instruct: Classify Amazon reviews into positive or negative sentiment
Query: love ona but block disappointed

I have used Ona products for years. I love the Linen scent and use the liquid concentrate and gel to eliminate pet odors. It is lightly scented and neutralizes odors. There is not a heavy perfume odor like cover-ups. HOWEVER, I ordered two blocks for the first time and was very disappointed. They were extremely strong smelling the first two days and then did not smell at all unless I put my nose right to them. I would recommend going with the gel and concentrate instead, although that requires refilling as it evaporates, which is does quickly here in the Arizona desert.