[krdahmer]

I also had that problem once with the wheat litter, I bought a smaller single use box type one to let a friend try it, but left it at the front door for a few hours, later that night we found larvae climbing up the wall and all over the back of the door! They were weevil larvae from improperly stored wheat. The store took it all back and the big bags I bought were all fine, just all the box style ones were 'tainted'.