I am trying to get my two older cats on glucosamine treats to assist with one's arthritis and one's potential arthritis. These are expensive and I finally decided on the brand that was the most affordable. The senior cats won't eat them! Not sure why. Is it ok to give these to my younger (9 yr. old) cat, who doesn't need them, just as regular treats, as long as no more than 2 a day? I don't want to just throw them away.