People who travel for work, spend winters elsewhere or own a seasonal property often report the same pattern: they come back and something has moved in. The house was not damaged on purpose. It was empty, quiet and warm, and an animal found a way in.
What changes when no one is home.
Rodents avoid people and the vibrations they make. A house with no footsteps, no running water and no lights is a safer place to explore. Over a week or two, an animal that tested the foundation can move in, nest and breed before anyone notices.
The longer a house sits, the larger the problem tends to be when you return. A fortnight may mean a few droppings. A season can mean a nest in the attic insulation.
Before you leave.
- Walk the outside and close gaps at the foundation, garage door and vents.
- Put all food in sealed containers, including pet food and pantry staples.
- Empty and clean the refrigerator if it will be off.
- Take out the trash and recycling, and leave the bins closed.
- Clear clutter near walls and keep stored items in lidded bins.
- Close the damper or cap the chimney, and check that the attic hatch fits tightly.
If you can, ask a neighbor to check inside and outside once a week. A simple log of the date and what they saw is enough.
While you are away.
| Task. | How often. | What to look for. |
|---|---|---|
| Interior walk-through. | Every one to two weeks. | Droppings, chewed boxes, odors. |
| Exterior walk. | Weekly or after storms. | New holes, burrows, vent screens. |
| Garage and car. | Every few weeks. | Debris under the hood, droppings, shredded material. |
| Mail and packages. | As needed. | A pile tells animals no one is home. |
When you return.
Open the door and breathe. Notice any smell, then walk through the house before unpacking. Check the kitchen, pantry, basement, attic hatch and garage. If you see droppings, do not sweep them. Wear gloves, open windows and follow the damp method in the CDC guide linked below.
- Take pictures of what you find, a quarter alongside for size.
- Note the rooms and the amount of activity.
- Check the car's hood before driving.
- Call with your findings before you begin cleanup of large areas.
You need not know in advance whether it is a mouse or a rat; describe the signs and we narrow the field.
(551) 274-5838Empty rental units and vacant buildings.
Vacant units need a check between tenants. Look at kitchens, bathrooms, under sinks and around pipes. If you find activity, trap first, then seal, then clean and repair. Commercial and multi-unit plans can cover a building as a whole.
Seasonal and second homes.
Houses that sit for months face a longer period of risk. A pre-season check helps. Walk the outside, test the foundation and vents and book a walk-through before the family arrives. A house closed for the winter is a good candidate for a one-time sealing job that holds for years.
Cleanup afterward.
If animals nested, plan the stages in order: trapping, sealing, cleanout and then repairs. The attic and crawl space cleanout page describes the sequence. Rushing to replace insulation before the animals are gone only repeats the cost.
Before touching any pellet
The goal of these steps is to keep rodent dust from rising until help is on the way.
- Sweeping is the habit to drop first: dried droppings crumble, and the powder is easy to inhale.
- Sheds, cabins and garages that were shut for a long time want half an hour of fresh air before anyone works inside.
- Keep your hands covered for the entire job and wash them with soap and water when the gloves come off.
- The surface should look drenched rather than damp before you start wiping.
- Wipe tools, mop heads and tabletop surfaces that touched the mess with the same disinfectant.
- After exposure, a cough, a fever or short breath is reason enough to ring a doctor soon.
Public references used here
Direct links to the agency pages follow.
- CDC page on keeping hantavirus away: A three-part habit for a house that rodents avoid: seal, trap, then clean.
- Tidying rodent mess, according to the CDC: Ventilate first, then dampen waste where it sits, and bag it while still wet.