I can help identify it, but I’ll need more details. Could you upload a clear photo of the piles (including something for scale, like a coin or your hand), and tell me:
- What do they look like (color, size, shape, texture)?
- Are they hard pellets, powder, flakes, eggs, droppings, or plant-like material?
- Where exactly were they found (floor, bed, closet, windowsill, near food, under furniture)?
- Any signs nearby (holes, insects, damaged items, smell, stains)?
If you suspect it could be animal droppings, insects, mold, or something from a pet, avoid handling it with bare hands until it’s identified. A photo will usually make it much easier to narrow down.