Instruct: Classify a given Amazon review as either positive or negative.
Query: Used to work, but not any more

I bought this several years ago from a local Lowe's store and it worked great. I just sprayed it on my lawn and the moles/gophers were gone within a week. A few years later, the gophers came back, so I went to Lowe's to buy some more. Unfortunately, they no longer carry it. I live in California where the laws regarding chemicals and pesticides are stringent. I wouldn't be surprised if it can't be sold here.So, I checked around and found Mole Stop on Amazon and bought two bottles. This time, it did nothing. I don't know if they changed the formula, or if they have a different version for California, but I sprayed it on my lawn three times and the gophers remained.