We have been using this product for years. We have 5 cats, ranging in age from 1 year to 11 years old. This has been the ONLY cat food we feed our cats. They seem to love it and as they are all healthy active indoor cats, I thought we had a winner. About 5 months ago we purchased a new bag. None of the cats would eat it. I didn't understand. They love this cat food. After 2 days of NOT ONE OF THE CATS EATING, I dumped the bag out on the floor. Included in the food was a HUGE glob of something smelly and greasy. In the middle of this smelly greasy mess was a small rusted wrench. Of course I threw out the food. I put the glob into a sealed baggie (double bagged), cut out the codes for manufacturing the product and sent it to the manufacturer with a letter explaining what happened and I included my purchase receipt. I have not heard a word from them. I think I should have just taken pictures and not sent the items. Their non reply tells me that they do not care about their customers. I do still buy this product as the cats like it so much BUT I now open every bag and check the contents. If it doesn't look right or smell right, I take it back and get a return for it. I then have to purchase another bag. I have tried other brands of cat food and I cannot seem to find one that the cats enjoy as much as this brand. I am disappointed in the Manufacturer. I try to be understanding and patient. One bad bag, from years of buying this product, is still alarming to me.