ugh, one of my jars of rice has been infested with booklice. what should I do about it?

I'm not sure how the booklice got in. It's a smaller portion of grains from a 5-pound bag, and the greater bag doesn't show any signs of infestation, and also I'd thoroughly cleaned and dried the jar before I filled it. As far as I can tell none of my other dry food containers (rice or otherwise) have been infested.