1. Droppings: 

Rodent droppings are a common sign of an infestation. They are usually found in areas where rodents are active, such as along walls, in cabinets, or near food sources.

2. Gnaw marks: 

Rodents have strong teeth and will gnaw on anything they can find, including wires, wood, and plastic. Gnaw marks on wires or other materials can be a sign of an infestation.

3. Nesting materials: 

Rodents will often build nests in hidden areas, such as inside walls or in attics. These nests can be made from shredded paper, insulation, or other materials.

4. Grease marks: 

Rodents have oily fur and will leave grease marks along walls and other surfaces as they travel through a space.

5. Squeaking or scurrying sounds:

If you hear scratching, scurrying or squeaking sounds in the walls or ceiling, it may be a sign of a rodent infestation.

6. Unusual pet behavior:

Pets may become more alert, agitated, or even start pawing at walls or floors if they sense rodents in the area.

If you notice any of these signs, it is important to take action immediately to prevent the infestation from getting worse.