4 Diseases associated with rodent droppings and how to keep your family safe!


During the winter months, rodents like mice and rats usually look for food and shelter in warm spaces. They will make their way through the smallest holes, cracks, and gaps in our house or property.  


Once they’re inside, mice and rats create nests and hide in closed, dark spaces where there’s usually not too much traffic: attics, garages, crawlspaces, and even wall voids. The main problem with rodents is the viruses that come from their urine and droppings. 


Rodent urine and droppings contain multiple bacteria. It’s the cause of dangerous diseases and viruses that can start from simple flu-like symptoms to severe respiratory failure. Mice and rats can also represent structural damage, due to the decomposition of this waste.


Rodent droppings can carry bacteria and parasites, even after dry. These bacteria can be spread through air ventilation because most of them are airborne, thus, creating a hazardous environment for the people living in these households.

Image shows a garage space filled with clutter and debris, a perfect place for rodents to nest.
Image shows a garage space filled with clutter and debris, a perfect place for rodents to nest.

Leptospirosis - Bacterial disease that can affect humans and animals.


Leptospirosis is a bacterial disease caused by the genus Leptospira. Sometimes, it’s difficult to detect because of its symptomatology. 


Leptospirosis bacteria are spread through the urine of infected animals, and can also be carried through water and soil. It’s a strong bacteria that can survive for several months in damp environments. In humans, Leptospirosis can cause the following symptoms that include:


-High fever





-Body ache


And more. Learn about Leptospirosis signs and symptoms here.

If your house suffered from flooding recently, it’s even more important to locate areas where the water supply could have been compromised. 


Leptospirosis can enter our body through skin and mucus. If you have domestic animals like dogs or cats, you should keep them away from closed, poorly ventilated areas where mice and rats can be hidden.


Cleaning rodent droppings is a task that should be done by professionals, as these bacteria can spread airborne if not contained properly. Our Team of Professionals is certified and ready to help you in case you find rodent droppings in your house or Property.

Arenavirus -  Viruses that can be spread through Animal Urine and Droppings. 


Arenavirus compounds a family of viruses known as Arenaviridae. Its origin is directly associated with rodent-transmitted diseases in humans. Depending on the host or species that transmit the virus, symptoms can variate, although the most common are Flu-like symptoms and Hemorrhagic fiver.


Humans can get infected by Arenaviruses by having contact with rodent excrement or contact with infected surfaces. If the person has an open wound and it’s close to an area affected by rodent excrement, they can get infected by Arenaviruses. It can also be transmitted through the ingestion of contaminated food or water. 


If you want to learn more about Arenaviruses and which species host variations of the virus, click here.


Mice and rats can hide in the clutter. We strongly recommend keeping boxes off the floor and maintain these areas organized. Bio-One technicians will help you declutter any area that might be infected by rodent droppings, following strict protocols and procedures to disinfect and sanitize any surface affected by the infestation. 

Hantavirus Pulmonary Syndrome (HPS) - A Dangerous Disease that could put your life at risk.


Hantavirus Pulmonary Syndrome (HPS) is a respiratory disease caused by contact with rodents that carry this virus. It’s a severe illness that could be fatal if not treated promptly.


The main source of infection is a rodent infestation in houses or properties and, while this disease has not been reported to affect domestic pets, they can still participate in the process of infecting the household by bringing in rodents.


In the US, there are many variations of the HPS. Depending on the area, it might be possible to track down which species is more likely to carry the virus. Rodents transmit HPS via urine, droppings, or nesting. They will make their way through clutter and debris to create the ideal environment for infectious diseases. 

Image shows unattended rodent droppings in an indoor space.

Just like Leptospirosis, people can get infected by HPS through airborne transmission. When urine, droppings, and even saliva are concentrated in a small area, tiny droplets of the virus are likely to get into the air. What does this mean? It means that if you have a rodent infestation, virus particles can travel through HVAC Systems.


Cleaning an area affected by rodents (urine, droppings, saliva) can be difficult because even infected surfaces represent a risk of infection. Bio-One Specialists can properly disinfect and dispose of any kind of animal waste, making sure that your house is safe from bacteria and viruses.

Salmonellosis - A disease that can affect every member of the household.

Salmonellosis is a common disease, caused by the ingestion of food contaminated by rodent excrement. 


This infectious disease can be passed between humans and animals, so it’s important to be careful when interacting with pets and other animals. They can carry the bacteria without showing any visible sign of infection, looking healthy and clean.


The key to preventing Salmonellosis from attacking your account house and family is hygiene. If you find any sign of rodents nesting in your garage or attic, address the situation and give Bio-One the opportunity of helping you if you fear the process can be dangerous for you and your loved ones. 

If you own a pet rodent


We recommend the following:


Pet rodents are not recommended for families with children 5 years of age or younger, and anyone with a weakened immune system. This group of people is at greater risk of contracting Salmonella.


Keep your pet away from your kitchen area and places where you store food and beverages.


Keep your pet rodents’ food and supplies away from yours. Separate them and always wash your hands after touching, feeding, or interacting with rodents.

Image shows Bio-One of Oceanside technicians disposing of trash after servicing a rodent dropping scenario.

Bio-One is here for you!


Rodent infestations can represent serious problems to your house. From a health standpoint, it’s important to attack any scenario of clutter and debris because mice and rats are usually nesting in these areas. 


Also, if you’re thinking of cleaning an area that has been affected by rodent droppings, the first thing you need to do is identify where are these animals coming from and seal them before cleaning and disinfecting. 


Our team of specialists at Bio-One of Oceanside is trained to contain any area contaminated by rodent urine and droppings. 


Give us a call at Bio-One: 760-891-5819. We offer FREE ESTIMATES for our services, AVAILABLE 24/7, 365 days a year.


We are proud members of the Southern California Rental Housing Association and the Carlsbad, Oceanside, and Vista Chambers of Commerce!

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