Unfortunately, both my cats only like the green liquids, with catnip flavour. They leave the yellow liquids, which have a cheese flavour, and that's clearly not to their taste...
[I received this product in exchange for my honest opinion]. I would rate the quality as average.
Positive: Contains taurine, which is essential for cats. No added sugar. No artificial colours or flavourings according to the manufacturer.
Negative: Only 4% chicken or 4% salmon are specifically listed. The main ingredients are vaguely described as meat and animal and plant by-products. The protein content of 3.5% is rather low. Okay for occasional use.