My bottles of Petzlife have a best used by date on them which is printed on the back label vertically. A best used by date is different than an expiration date. Something should be thrown out if it has expired, it can be dangerous, this is not true with a best used by date. Since one of the main ingredients is grain alcohol, which is a great preservative, I don't think you have to worry. My best use by date is 3 years from my purchase date. Hope this helps.
Btw, usually the salmon flavor is recommended for cats, does your dog like it?
Last edited by Nancy1999; 04-08-2008 at 10:14 AM.
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