I was having trouble with allergies in my cat and swiched to Natual Balance a month ago. My cats all seemed to adjust well, no more itching or vomiting. I opened a new bag of Natual Balance-Green Pea and Duck to find the color and size of the kibble to be different. The size is larger and the color is noticeably lighter. My 5 cats noticed a different as well. After a few days I have now been coming home to cat vomit and a lack of interest in the food. I went to Natual Balances web site and the following is what I found. \"COMING SOON: As Natural Balance continues to grow, we have found it increasingly difficult to obtain the quality and quantity of duck meal from the United States that our rigorous standards require. In order to address this issue before supply becomes a problem, Natural Balance has decided to add more fresh duck and pea protein into the Green Pea & Duck formulas. We have found this adjustment enhances the palatability and performance of the product, but may lighten the kibble color. We have been feeding this formula for the last six months to many of our own Natural Balance pets and it has produced exceptional results.\" Is there anyone else out there experincing the same problem? This is starting to sound like Filidae all over again. Filidae did not mark their bags letting the consumer know of the change in formual.