Roughly six weeks, which is roughly one jar. Write down one sentence about tomorrow morning's first ten minutes, put it away, and read it in six weeks. That's a better test than your memory, and your memory is the most hopeful witness in the house.

Then it's useless, and the Empty Jar Promise still covers you. Most dogs eat it like a treat, which is the entire reason it's a chew and not a powder, but most isn't all and your dog gets a vote.

That's a question for your vet, not for a page. Take the Vet Conversation Card in and ask. I'm not going to answer it here and you should be suspicious of anyone who does.

Feed him the whole jar. Every chew. If he isn't moving more easily by the end of it, send the empty jar back and we'll refund you in full. Not unopened. Not unused. Empty. We'd rather you used it properly and asked for your money back than left it in the cupboard and wondered.