I'm feeding my dog with the cooked dog recipe. Since her throat is closing up due to calcifications, she cannot eat the ground egg shells from the hard boiled eggs in the recipe. This product was recommended. The powdery calcium mixes very well in her food. Just don't wear navy or black clothes while using it. It's as fine as talcum powder and when you open the jar, it's like a magnet to your clothes. Lol. Kidding aside, the Fidocal is a wonderful product.