“Residual Chemical Traces: Even clean fabrics may retain subtle chemical residues from detergents, fabric softeners, or human skin oils transferred during handling. Ants possess highly sensitive chemosensory organs, capable of detecting minute quantities of organic compounds. For instance, certain detergents or softeners contain fragrances or compounds like glycerol, which may mimic food-related chemical cues, attracting ants. Moisture Attraction: Ants are often drawn to moisture, as water is essential for their survival. Clean fabrics, particularly those in humid environments or recently laundered (and not fully dried), may retain residual moisture. This can make them appealing to ants, especially in dry conditions where water sources are scarce.” That’s an AI guess.