Rodents are often most active at night, making it difficult to spot them directly, but there are several common signs of their presence. Droppings, which are small and dark, are often found in kitchen cabinets, pantries, or along baseboards. Gnaw marks on food packaging, wires, furniture, or walls indicate rodent activity. Scratching noises within walls, ceilings, or under floors suggest rodents are nesting in hidden areas. Grease marks along walls or baseboards may appear as rodents repeatedly travel the same paths. A strong, musty odor can also develop in areas where rodents are active, particularly if an infestation is severe. If any of these signs are noticed, professional intervention is recommended before the problem worsens.