• Scratching Noises – These aren’t noises that will wake you from your sleep, but if you happen to be awake at night when they are most active, you will be able to hear them if you listen carefully. Pay attention, especially to places where you suspect rats can reside in your home, such as false ceilings, the attic, or the basement.
• Droppings – They are small and dark, and a single piece may be hard to notice, but rats usually leave between 50 and 80 of them, most likely somewhere close to the food.
• Grease Marks – Rodents leave them whenever they rub themselves against the walls.
• Tracks – If there is a dustier part of your home or another flooring that you can leave your tracks on, you will find rats’ footprints and tail marks. If you suspect that you may have rodents, but you’re not sure, you can do a test by sprinkling some flour on the ground.
• Smells – Rodents urinate a lot, and unfortunately, it is hard not to smell the odor.
Remember that if you see a dead or alive rodent in your home or your office, it almost always means that there are more of them.