
If you’ve been scrolling through the news lately, you might have seen some unsettling headlines regarding a "Level 3" emergency response from the CDC. A recent report from the World Health Organization (WHO) detailed a cluster of Hantavirus cases aboard a Dutch expedition cruise ship, the MV Hondius. While the ship was traveling near South America and Antarctica, the news has traveled much further, sparking questions about safety here at home.
As your neighbors here at STL Pest Control, we know that hearing about "outbreaks" can be stressful. Our goal is to provide you with the honest, practical advice you need to keep your family safe. While the cruise ship situation involves a rare strain called the Andes virus (which can uniquely spread from person to person), the primary concern for us in the Greater St. Louis area remains the traditional way Hantavirus enters a home: through rodents.
In this guide, we’ll break down exactly what’s happening in the news, why it matters to Missouri homeowners, and, most importantly, how to safely handle rodent issues without putting your health at risk.
The "Andes Virus" News: Separating Fact from Friction
The WHO report (DON600) focused on a specific cluster of eight cases among passengers and crew on a cruise ship. This particular strain, known as the Andes virus, is native to South America. It is the only known strain of Hantavirus that has been documented to spread between humans.
However, for those of us living in St. Louis, the situation is different:
- Local Strains: The strains found in North America, such as the Sin Nombre virus, are typically carried by deer mice and white-footed mice.
- Transmission Path: Unlike the cruise ship outbreak, local Hantavirus does not spread from human to human. It is strictly an "environmental" risk.
- Low Risk, High Impact: While infections are rare in Missouri, the health consequences are severe. This is why we treat every rodent infestation with a "safety-first" mindset.
We understand that finding a mouse in your pantry or a nest in your crawlspace is unsettling enough without worrying about global health reports. But these news cycles serve as a good reminder: rodents are more than just a nuisance; they are a health hazard that requires professional attention.
How Hantavirus Actually Spreads in Your Home
You don't have to be bitten by a mouse to be at risk. In fact, most people who contract a rodent-borne illness never even see the mouse that caused it. Hantavirus is primarily spread through aerosolization.
When rodent droppings, urine, or nesting materials are disturbed, tiny particles containing the virus can become airborne. If you breathe in that "dust," the virus can enter your system. This is precisely why your choice of cleaning method matters so much.
Common "Hot Spots" for Rodent Activity in St. Louis:
- Detached Sheds and Garages: Areas that sit undisturbed for long periods are prime real estate for mice.
- Crawlspaces and Attics: These hidden voids provide the warmth and nesting material (insulation) that rodents crave.
- Basements: Especially in older St. Louis homes, small cracks in the foundation offer an open invitation for pests.

The Danger of the "Quick Clean": Why DIY Can Be Risky
When you walk into your garage and see a pile of droppings on a shelf, your first instinct is likely to grab a broom or the shop vac. Please, stop right there.
Using a dry cleaning method is the most dangerous thing you can do in a rodent-infested area. Sweeping or vacuuming dry droppings launches those viral particles directly into the air you are breathing.
4 Reasons Why Professional Decontamination is Safer:
- Specialized Equipment: Professionals use HEPA-filtered vacuums and respirators that are rated to catch microscopic viral particles.
- The "Wet" Method: We use industrial-grade disinfectants to saturate the area before removal, "locking" the dust in place so it cannot be inhaled.
- Complete Sanitization: It’s not just about removing what you see. It’s about neutralizing the pheromones and bacteria left behind that attract more rodents.
- Risk Mitigation: Our team is trained in Integrated Pest Management (IPM), which focuses on long-term safety rather than just a quick chemical fix.

Step-by-Step: How to Safely Clean Small Rodent Messes
If you find a very small amount of activity and decide to handle it yourself, follow these CDC-aligned protocols. If the infestation is large or in a confined space like an attic, call us at STL Pest Control immediately.
1. Ventilate First: Open all doors and windows to the area and leave for at least 30 minutes before you start cleaning.
2. Gear Up: Wear rubber or plastic gloves and a well-fitting mask (preferably an N95).
3. The Bleach Solution: Mix 1.5 cups of household bleach with 1 gallon of water (roughly a 1-to-9 ratio).
4. Soak, Don't Sweep: Spray the urine or droppings until they are completely soaked. Let it sit for at least 5 minutes.
5. Double Bag: Use a paper towel to pick up the waste, then place everything: including the paper towels and your gloves: into a plastic bag. Seal it tight and put it in a covered trash can.
6. Wash Up: Scrub your hands thoroughly with soap and water after removing your gloves.
Why Professional "Rodent Exclusion" is the Only Real Solution
Killing the mice currently in your home is only half the battle. If you don't figure out how they got in, you’ll be doing the same dance again in three months. At STL Pest Control, we specialize in Rodent Exclusion.
Exclusion is the process of finding every tiny hole: some as small as a dime: and sealing them with professional-grade materials that rodents can't chew through.
Why Choose STL Pest Control for Your Rodent Safety?
- Local Roots Since 1989: We’ve spent over 35 years studying the specific habits of St. Louis rodents. We know where they hide in our local architecture.
- Family-Operated Values: We treat your home like it’s our own. Safety for your children and pets is our top priority, which is why we use eco-friendly IPM strategies.
- Same-Day and Emergency Service: If you find a major mess and can't sleep knowing it's there, we offer fast response times to restore your peace of mind.
- Expert Staff: Our team of 14 licensed pros is large enough to handle major commercial infestations but small enough to provide the personal, "neighborly" service St. Louis is known for.

Integrated Pest Management: A Sustainable Approach
We don't believe in just spraying chemicals and leaving. Our Integrated Pest Management (IPM) approach is about being a "transparent advocate" for you.
- Inspection: We find the root cause (entry points, food sources).
- Identification: We confirm exactly which species we are dealing with.
- Action: We use the least-toxic, most effective methods to remove the threat.
- Prevention: We seal the home and provide you with tips to keep them from coming back.
Whether you're a homeowner, a landlord, or a property manager, this structured approach ensures that you aren't just treating symptoms, but actually solving the problem.
Final Thoughts: Peace of Mind for Your St. Louis Home
The news about Hantavirus on cruise ships is a stark reminder of the hidden risks that pests can carry. However, knowledge is the best defense. By understanding how these viruses spread and committing to safe, professional cleaning and exclusion practices, you can keep your home a true sanctuary.
You don't have to tackle this alone. If you've discovered signs of rodents: or if you just want a professional "check-up" to ensure your home is sealed tight: give us a call. We offer the expertise of a large-scale operation with the heart of a local, family-operated business.
Ready for a worry-free home?
Contact STL Pest Control today for a consultation. Whether it's a routine inspection or an emergency rodent removal, we’re here to provide the fast, fair, and expert service you deserve.

STL Pest Control
Serving the Greater St. Louis Area Since 1989
Fast, Fair, and Family-Operated