Instruct: Classify the given review into positive or negative sentiment.
Query: Well worth it!

My 13yo cat has only been using this product for 6 days. I'd bought it because a few months back she had a urinary tract infection and had lost weight. Though the infection was well gone, she was only nibbling at her food, was not regaining the weight, and was generally sluggish. In the past week, she's become more interested in food, is spending more time outdoors again, and is frankly her quite-impatient old self again--letting me know in no uncertain terms it's time for her canned food! I just sprinkle the capsule contents on her canned food each day and she scarfs it down. She's cleaned her dish every day since the very first day! I'm totally impressed!