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Rodent peeking through a hole in attic inside a home

Do I Need to Replace Insulation After Rats Have Been in My Attic?

TL;DR Yes, in many cases you do need to replace insulation after rats have been in your attic. Rat droppings, urine, nesting materials, and oils contaminate insulation, reduce its effectiveness, and can create health risks.Spot cleaning or deodorizing rarely solves the problem long term. A proper inspection determines whether partial removal or full insulation replacement […]

Illustration showing rats active in a home attic at night, highlighting the circadian rhythms of attic rodents and the peak nighttime hours when rats are most active.

What Time of Night Are Rats Most Active in Attics?

TL;DR Rats are nocturnal and are most active in attics late at night, especially between midnight and 2 AM, when homes are quiet and dark. Hearing consistent scratching, thumping, or gnawing during these hours usually means rats are nesting in your attic, not just passing through. Ongoing nighttime noise often signals an established rodent problem […]