Can Vacuuming Spread Mouse Droppings?

CDC is explicit: "Don't vacuum or sweep rodent urine, droppings, or nesting materials. This can cause tiny droplets containing viruses to get into the air." Since hantavirus is mainly spread to people when they breathe in contaminated air, stirring up dust with a vacuum or broom is precisely the exposure the CDC's cleanup protocol exists to prevent. This applies to household vacuums, shop vacs, brooms, leaf blowers, and compressed air alike.

For an enclosed space, open doors and windows for 30 minutes and leave the area; return in gloves; spray droppings until very wet with a disinfectant or fresh 1:9 bleach solution; let it soak 5 minutes; wipe with paper towels; bag in covered trash; then mop hard surfaces. Only after all visible droppings and residue have been wet-cleaned should any remaining dust be addressed, and even then a standard household vacuum isn't the tool CDC recommends for that.

If droppings were vacuumed or swept before you knew this rule, CDC's advice is to go back and follow the proper wet-cleanup method on the area rather than continuing with dry methods. Watch for flu-like symptoms or shortness of breath in the days that follow, and see a physician if they appear, mentioning the rodent exposure.