How dangerous are rodents—mice and rats? - briefly
Rodents serve as carriers of serious diseases such as hantavirus, leptospirosis, salmonella, and can contaminate food and surfaces with pathogens. They also cause structural damage by gnawing wiring, insulation, and building materials, increasing fire and safety hazards.
How dangerous are rodents—mice and rats? - in detail
Rodents such as house mice and Norway rats represent a significant public‑health and property threat. Their small size and high reproductive rate enable rapid colonisation of homes, warehouses, and food‑processing facilities.
Health hazards
- Transmission of pathogens: hantavirus, leptospirosis, salmonellosis, and Lassa fever can be spread through urine, droppings, or saliva.
- Allergic reactions: dander and urine proteins provoke asthma and rhinitis in sensitive individuals.
- Bites and scratches: may introduce bacterial infections, including streptococcal and staphylococcal species.
Food safety risks
- Direct contamination of stored products by gnawing, nesting, and excreta.
- Indirect contamination through insects attracted to rodent waste, further compromising hygiene standards.
- Economic losses: spoilage, product recalls, and increased inspection costs.
Structural damage
- Gnawing of electrical wiring creates fire hazards.
- Chewing of insulation, plumbing, and building materials leads to costly repairs.
- Burrowing in foundations and walls undermines structural integrity over time.
Ecological impact
- Competition with native wildlife for shelter and food resources.
- Predation on insects and small vertebrates, potentially altering local ecosystems.
Effective control requires integrated pest‑management strategies: sealing entry points, maintaining sanitation, employing traps or bait stations, and monitoring populations regularly. Early detection and prompt remediation reduce the likelihood of severe health outcomes and property damage.