Hi and welcome to YT

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What bad things did you hear about the med...?
As far as poop eating, I'd buy Solid Gold's SEP (Stop Eating Poop) on Amazon. Worked like a charm when our Wylie was a puppy and poop eating.
Also, you may want to change kibbles...what are you feeding? If you're feeding a higher-carb kibble, this can really contribute to poop eating as many carbs are still undigested in the poo, making the poo still smell like food to the dog.