Mommy posted a warning about KMR powder on her blog: The Frugal Feline. Smell the contents of the powder if you're using it. If it does not smell faintly of milk, call PetAg (details on Mommy's blog). We hope this isn't what caused the deaths of the tiny tuxies. The container Mommy was using smells. She thought it was alright because it was new and the expiration date was ok. She feels like a fool that she didn't check the smell of it! :*(
The KMR powder wasn't the whole reason the tiny tuxies died. It may have sickened them, but not enough to cause their deaths. There's a new post on this blog about Mommy's phone call to the company to report it.