While this particular story ended with laughter and relief, the instinct to take unexplained piles of material in a child's room seriously is a good one. Here is a practical guide to identifying what you might be looking at — because not every mysterious pile has an innocent explanation.
Termite frass looks like tiny, hard, hexagonal pellets — usually brown, tan, or black depending on what wood the termites are eating. The pellets are remarkably uniform in size and shape. They accumulate directly beneath kick-out holes in wood. Check wooden window frames, door frames, furniture, baseboards, and any exposed structural wood near where you found the piles. If you find small pinhole-sized openings in wood near the piles, call a pest control company immediately.
Powderpost beetle frass is finer than termite frass — more like flour or fine sawdust — and is typically cream or tan colored. It falls from small round holes in hardwood surfaces. Run your finger along any nearby wooden furniture or flooring and look for tiny exit holes. Fresh frass is soft; older frass becomes compacted.
Mouse droppings are dark brown or black, 1/8 to 1/4 inch long, with tapered ends. They typically smell musty and unpleasant. They are almost never in neat piles — mice drop waste as they travel, so you will usually find a trail rather than a concentrated pile. Check along baseboards and behind furniture for additional evidence.
Carpenter ant frass is coarser than termite frass and is often mixed with dead insect body parts, soil, and wood fragments. It looks more like a pile of debris than a tidy mound of uniform pellets. Carpenter ants do not eat wood — they excavate it — so their frass galleries tend to look rough and mixed rather than neat and sorted.
Before escalating to pest control, it is worth doing exactly what eventually solved this case: checking all toys, stuffed animals, bean bags, seed-filled heating pads, and any other items in the room that might contain natural fill material. Aromatherapy stuffed animals, buckwheat pillows, rice-filled heating compresses, and similar products can all develop small leaks that are invisible until the filling has been accumulating on the floor for some time. The filling from these products can look remarkably like pest frass or droppings when piled on a floor.
The broader lesson from Kelli's story is one that the internet rarely teaches but occasionally stumbles into: sometimes the most alarming thing turns out to be the most innocent. The panic was understandable, the caution was appropriate, and the relief — when it came — was entirely earned. And somewhere, a lavender-scented stuffed bear with a small leak in its seam deserves some credit for generating 150,000 reactions and reminding a large portion of the internet that not every mystery needs an exterminator.