1. Health Risks: Rats are notorious carriers of various diseases that can be transmitted to humans and pets, such as leptospirosis, hantavirus, and salmonella. Their droppings, urine, and saliva can contaminate surfaces, leading to health hazards in homes and businesses.

2. Property Damage: Rats have strong teeth that can gnaw through almost anything, including wood, plastic, and even electrical wiring. This gnawing behavior can cause significant structural damage and increase the risk of electrical fires.

3. Contamination: Rats are attracted to food sources and can contaminate food supplies with their droppings and urine. This not only leads to food wastage but also increases the risk of foodborne illnesses.

4. Rapid Reproduction: Rats breed quickly, with a single pair capable of producing hundreds of offspring in a year. This means a small rat problem can quickly turn into a large infestation if not addressed promptly

1. Droppings: Rat droppings are often one of the first signs of an infestation. They are small, dark, and pellet-shaped, typically found near food sources, in cupboards, along baseboards, or in hidden areas like behind appliances.

2. Gnaw Marks: Rats constantly gnaw to keep their teeth sharp. Look for chew marks on food packaging, wires, wood, and plastic. Fresh gnaw marks will be lighter in color, while older marks will be darker.

3. Tracks and Runways: Rats often follow the same paths along walls or baseboards. You may notice greasy smudge marks from their fur, footprints, or tail marks in dusty areas. Using a flashlight at a low angle can help reveal these tracks.

4. Nests: Rats build nests from shredded materials like paper, fabric, and insulation. These nests are typically found in hidden, warm areas like attics, wall cavities, or behind large appliances.

5. Scratching or Squeaking Noises: Rats are often active at night, so you may hear scratching, gnawing, or squeaking sounds coming from walls, ceilings, or under the floorboards, especially at night.

6. Burrows: Outdoors, rats may dig burrows for nesting and food storage. These burrows can often be found in gardens, under decks, or along foundations. Look for small, smooth entrances to these burrows.

7. Footprints and Tail Marks: In dusty or dirty areas, you might notice small footprints or tail marks. You can check for these by sprinkling flour or talcum powder on the floor and checking for tracks the next day.

8. Pet Behavior: Pets like dogs and cats may become unusually agitated or focused on particular areas where rats are hiding, such as behind walls or under floors. They might sniff, bark, or scratch at these areas.

9. Urine Stains and Odors: Rats leave behind urine trails, which can stain surfaces and emit a strong, musky odor. The smell may become more noticeable as the infestation grows.

10. Damaged Food Packaging: Rats will chew through food packaging to access food. You may notice torn or gnawed packaging, especially in pantries or cupboards where food is stored.

11. Unexplained Damage: If you notice unexplained damage to wires, insulation, or structural components of your home, it could be due to rats. This type of damage is not only a nuisance but can also be a fire hazard.