1. Sightings of live and dead rodents

2. Feces (droppings)

3. Evidence of gnawing

4. Burrows

5. Runways

6. Tracks in dust

7. Grease marks

8. Urine stains

9. Rodent sounds

10. Reaction of dogs and cats

11. Smell- indication of activity or of dead rodents

12. Damage to stock

13. Stock piles of food (hoarding)

14. Piles of indigestible food products (Ex. nut shells)