We received a straightforward worm-identification question from a reader a little while back: “what were the little white worms that I found in the morning when I came downstairs?” This (paraphrased) question is simple in a superficial sort of way because it only asks one thing, but the lack of any details (or an accompanying picture) makes it almost impossible to answer. The short question gives rise to a dozen more: What exactly constitutes a little white worm? Is the worm an inch, a half an inch, a quarter of an inch long? Is it skinny (relative to its length) too? Is it actually white, or is it an off-white color, perhaps with some minimally noticeable body marking (faint stripes, for instance)? The list goes on. So, we might not be able to correctly identify the little white worms our reader found, but what we can do is put forward a few possibilities, possibilities that are relevant to anyone who finds some small white worms in their house.