Rodent sign near attic HVAC returns

I’m seeing fresh rodent droppings clustered within 2–3 feet of attic HVAC returns in three homes since Monday, likely following the cold snap. For report notes, I’m recommending sealing any 1/4-inch gaps at linesets and chases, using HEPA vac for cleanup (no sweeping), and PPE — N95 or better and gloves — given potential aerosolized pathogens. Are you seeing the same pattern, or different hotspots I should be checking?

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