This product really does work great. I have two Yorkshire Terriers who have tear/gunk in their eyes. Without this product I would be constantly picking at eye boogers. I have tasted the "beef" flavor myself and it does taste really bitter. Since I have two dogs sprinkling it on their food became hard to get the correct dosage since they eat from the same bowl. They are so cute and take turns taking bites. So my vet suggested mixing it up in some apple sauce and giving it to them as a "treat". So every evening my girls look forward to taking their Angels' Eyes with their apple sauce. Plus you can buy sugar free or low sugar depending on what type of needs your dogs have.
for the finicky puppy, my 14 year old cocker quickly becomes suspicious of anything different in his food as well :) The best fix is to hide it in a spoon of reduced fat peanut butter. I put one layer on the spoon, sprinkle on the angel eyes, then put on another layer. He loves his PB, so I just push the whole spoonful in his mouth at once! I have to watch pills this way--I sometimes find them on the floor later-but the sticky PB usually works! Also mashed bananas, and canned pumpkin--pumpkin is great if you ever have a problem with constipation or stools seem hard, or puppy is straining.