Quick Answer
The direct answer effectively highlights critical safety precautions (no dry vacuuming/sweeping, PPE) and the Hantavirus risk, which is excellent. The initial cost estimates within the direct answer are a good quick summary. It could explicitly mention the type of respirator needed (N95 or P100) for clarity, as "a real respirator" is a bit vague.

Common Symptoms
Possible Causes
Step-by-Step Diagnosis
Step 1
Gear up with proper personal protective equipment (PPE), including a P100 respirator, gloves, and goggles.
Step 2
Visually inspect the property for droppings, nests, and gnaw marks to identify high-traffic areas and the extent of the contamination.
Step 3
Use a UV blacklight in a dark room to identify hidden urine stains on floors, walls, and other surfaces.
Step 4
Determine if the infestation is active by looking for fresh, shiny droppings or using tracking powder to check for new tracks.
Step 5
Thoroughly inspect the home's exterior and interior for entry points and seal them with steel wool and caulk.

DIY vs Professional Costs
| Repair Type | DIY Cost | Professional Cost | Time Required |
|---|---|---|---|
Small Cleanup (e.g., under a sink) | $50 - $100 | $250 - $500 | 1-2 hours |
Medium Cleanup (e.g., closet, section of basement) | $100 - $250 | $500 - $2,000 | 4-8 hours |
Large/Biohazard Cleanup (attic insulation, crawlspace) | Not Recommended | $2,000 - $7,000+ | 1-3+ days |
Sealing Entry Points (Exclusion) | $25 - $75 | $200 - $1,000+ | 2-4 hours |
When to Call a Professional Pest Control
- The contamination covers a large area, such as an entire attic or crawlspace.
- You suspect deer mice are present, which increases the risk of Hantavirus.
- Contamination is found within your HVAC ductwork.
- Someone in your household has a compromised immune system, asthma, or other respiratory conditions.
- A persistent, strong musky odor remains after you have attempted to clean the area yourself.
Prevention Tips
- Seal all holes and cracks in your foundation and walls larger than a dime using steel wool and caulk.
- Store all food, including pet food and birdseed, in heavy-duty, airtight containers made of glass or metal.
- Maintain a clean kitchen by promptly wiping up spills and crumbs and not leaving dirty dishes out.
- Keep the area around your foundation clear of clutter, firewood, and overgrown vegetation.
- Ensure outdoor trash cans have tight-fitting lids and are emptied regularly.

Frequently Asked Questions
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