What are the signs of a rodent infestation in a commercial property?

Rodent infestations can pose significant risks to commercial properties, potentially damaging infrastructure, contaminating products, and jeopardising business operations. Early detection is crucial for minimising these risks and implementing effective control measures. Recognising the signs of a rodent infestation is essential for business owners and property managers to take prompt action. So, what are the signs of a rodent infestation in a commercial property?

Droppings: The Telltale Evidence

Rodent droppings are one of the most common and visible signs of an infestation.

• • Look for small, dark pellets in areas where food is stored or prepared
  • Fresh droppings are soft and moist, while older ones are dry and crumbly
  • The size and shape of droppings can help identify the rodent species

Gnaw Marks: Destructive Traces

Rodents constantly gnaw to keep their teeth sharp, leaving distinctive marks on various surfaces.

• • Check wooden structures, packaging, and electrical wiring for chew marks
  • Look for rough-edged holes in walls, floors, and food containers
  • Freshly gnawed areas often appear lighter in colour than surrounding surfaces

Grease Marks: Rodent Highways

Rodents leave greasy rub marks along frequently travelled paths due to their oily fur.

• • Inspect walls, skirting boards, and pipes for dark, greasy smears
  • These marks are often found at floor level or where walls meet the ceiling
  • Heavier staining indicates more frequent rodent activity

Unusual Noises: Nocturnal Activity

Rodents are typically more active at night, producing various sounds as they move about.

• • Listen for scratching, scurrying, or squeaking sounds, especially after dark
  • Pay attention to noises coming from walls, ceilings, or under floorboards
  • Remember that rodents can be heard from a considerable distance

Visual Sightings: Direct Evidence

While less common during the day, actually seeing rodents is a clear indication of an infestation.

• • Be alert for quick movements in dimly lit or cluttered areas
  • Check for rodents near food sources or waste disposal areas
  • Remember that sighting one rodent likely means there are more hidden nearby

Nesting Materials: Rodent Homes

Rodents create nests using shredded materials found in the environment.

• • Look for accumulations of shredded paper, fabric, or insulation in secluded areas
  • Check dark, warm spaces such as behind appliances or in storage boxes
  • Nests are often found near food sources for easy access

Food Tampering: Unexplained Damage

Rodents will often damage food packaging and consume stored products.

• • Inspect food storage areas for signs of chewing or unexplained holes in packaging
  • Look for scattered food debris near storage locations
  • Be aware of any unexplained reduction in food inventory

Unusual Odours: Olfactory Clues

A distinct musty odour often accompanies rodent infestations, especially in enclosed spaces.

• • Pay attention to strong, unpleasant smells in areas with little airflow
  • The odour may be more noticeable when entering a room that’s been closed for a while
  • Be aware that the smell can linger even after rodents have been removed.