October 27, 2026
Rats in the Walls and Attic Are Usually One Problem
Scratching in a wall at night and scurrying overhead in the attic often come from the same rats. Rats travel through wall voids to reach the attic, and they use the attic as a nesting spot while they search the rest of the house for food and water. Treating only one area while ignoring the other is a common reason the noises come back.
The work that clears rats from walls and an attic follows the same order in both places. Find where they are active, trap the rats that are inside, seal the gaps they used to get in, and clean up the nesting material and droppings they left behind. Skipping a step leaves part of the problem in place.
Signs of Rats in the Walls and Attic
You may never see a rat, even with an active problem. Rats are nocturnal and they avoid open spaces, so the signs usually show up first.
- Scratching, scurrying, or gnawing sounds in walls or overhead at night
- Droppings along attic joists, in wall voids near access points, or in the garage
- Gnaw marks on wood, wiring, or stored boxes in the attic
- Shredded insulation, paper, or fabric gathered into nests
- Greasy rub marks along beams, pipes, or wall edges where rats travel the same route
- A stale, musky odor near the attic hatch or inside a seldom used room
How to Get Rid of Rats in the Walls
Rats in walls are hard to reach, so trapping is placed where the rats travel, not where people hope they will go. Traps work best along wall edges, near droppings, and close to the gaps where rats slip in and out of the void. A rodent inspection maps those routes first, so traps go in active spots instead of random ones.
Do not seal wall gaps before the rats inside are caught. Sealing a rat inside a wall leaves it trapped with no way out, and that creates odor and damage problems that are worse than the original noise. Trapping comes first, sealing comes second. Once activity stops, the gaps around pipes, vents, and utility lines get sealed with rodent resistant materials. Learn more about rodent exclusion in Puyallup and how sealing fits into the plan.
How to Get Rid of Rats in the Attic
Attic rats, often roof rats in Puyallup, nest high and travel along beams, wiring, and the top of wall voids. Traps in the attic go along those runs and near nesting areas, and they need regular checks until catches stop. Roofline gaps, vent covers, and places where pipes or wires pass through the roof and walls are common attic entry points, and each one needs attention once the rats are out.
After removal, the attic itself needs a look. Soiled insulation, nesting material, and droppings should be cleaned up, and damaged areas checked before new insulation goes in. Our attic rodent control page explains how attic work is handled, and rodent damage cleanup covers the cleanup step. University of California pest management guidance on rats also describes roof rat habits and why attic nesting is so common.
Why Trapping and Sealing Have to Work Together
People often ask what single action clears rats from a house. There is no single action that does it. Trapping without sealing removes the current rats but leaves the door open for the next ones. Sealing without trapping locks rats inside. Repellents and noise devices do not replace either step, since rats get used to them and keep using their regular routes.
The combination is what matters. Trap the rats that are inside, seal the entry points they used, remove the food and shelter that drew them in, and clean up the attic and wall areas they contaminated. That sequence takes time and repeat visits, and any plan that promises a one visit result for a wall and attic problem should be treated with caution.
When to Call for Help With Rats in the Walls and Attic
Call when the sounds keep coming back, when droppings keep appearing after cleanup, or when you can hear activity in both the walls and the attic. Those are signs of an established route into the house, not a single rat that wandered in. Rat removal in Puyallup starts with finding the route, and contacting Puyallup Rodent Pros is the way to get that inspection booked.
Puyallup Rodent Pros, 8417 Canyon Rd E, Puyallup, WA 98371, USA. Call (253) 452-0383.
