A unique blend of organic acids, enzymes, pro-biotics and electrolytes. What makes it unique is that the combination may be added to the drinking water. It is suggested that when first introduced to the pigeons, you should give it every day for a week and from there forward, you only need to give it once a week. Do not mix with other products. Acid Pak 4 Way is very economical to use as all you add is one quarter teaspoon per one gallon of drinking water. The first seven days be sure to give a fresh batch every day. Acid Pack 4 Way 227 Grams - 8 oz.