Hantavirus: What Every SGV Homeowner Should Know
Rodent droppings aren't just gross — disturbing them the wrong way can be genuinely dangerous. Here's the plain-English version.
What it is. Hantavirus is a virus carried by some wild rodents. In California, the main carrier is the deer mouse — the kind that gets into sheds, garages, cabins, attics and outbuildings, especially in foothill neighborhoods like ours. People get sick by breathing in dust that's contaminated with infected droppings, urine or nesting material.
Why sweeping is the danger. The virus doesn't jump on you from a dropping sitting on a shelf. The risk comes when droppings get stirred into the air — which is exactly what sweeping, vacuuming or dry-dusting does. A closed-up space plus a broom is the classic exposure story.
How serious is it? Hantavirus infections are rare, but the illness they can cause (hantavirus pulmonary syndrome) is severe. Rare-but-severe is exactly the kind of risk worth handling correctly, because handling it correctly is easy.
What we do. Our rodent service covers the whole problem: trapping the rodents, removing and disinfecting droppings and nesting with professional disinfectants and proper protective methods, and sealing the entry points so the next mice can't move in. One visit, problem actually handled.
If you've had a rodent exposure and develop fever, deep muscle aches and fatigue, see a doctor promptly and mention the exposure. This page is general information, not medical advice.
If You Find Droppings
- DO open windows and air the space out, then stay out of itVentilation is your friend. Give it at least 30 minutes.
- DO keep kids and pets away from the areaUntil it's been properly disinfected and cleaned.
- DO call a professional for infestationsHeavy droppings, nests, or a closed-up space = let us handle it.
- DON'T sweep, vacuum or dry-dust droppingsThis is the single biggest mistake people make.
- DON'T disturb nests or stored boxes bare-handedNesting material carries the same risk as droppings.
Hantavirus Questions
Quick Answers.
How do people actually get hantavirus?
By breathing in dust contaminated with the droppings, urine or nesting material of infected wild rodents — usually after sweeping, vacuuming or disturbing a closed-up space like a shed, cabin, garage or attic. It does not spread person to person in the U.S.
Do all rodents carry hantavirus?
No. In California the main carrier is the deer mouse — the wild mouse that gets into garages, sheds, cabins and attics, especially near the foothills. Common house mice and city rats are not the typical carriers, but droppings from any rodent should be treated with caution because you can't tell whose they are.
What should I do if I already swept up droppings?
Don't panic — illness is rare. But watch your health for the next few weeks, and if you develop fever, deep muscle aches and fatigue, see a doctor right away and tell them about the rodent exposure.
Droppings in the attic or garage?
Professional cleanup, disinfection and rodent-proofing — handled in one visit.