Zesty Paws Calming Chews Behaviour - Turkey

I fed it to my dog for half a year – didn't notice any effect. Recently, he won't eat it anymore and I had to mix it into his food. It's a shame, I expected more for the price. I've now bought a product from another company.

Not sure if they work but they're not one bit interested in them, and will spit it out on the floor even if it's away from their meals when they would likely be hungry. I'm going to have to throw them out.