Rats in the Attic: Signs, Sounds and What to Do
Something is moving above the ceiling after dark, and it is light and fast. Here is how to tell whether it is rats, why they chose your attic, and what to do about it that does not make it worse.
Call (571) 412-0006 if you would rather skip to the inspection.
What you are hearing
Rats are night animals. Texas A&M AgriLife Extension's guidance states that rodent activity increases after dark, which it calls the best time to listen for them, and describes rats making running and squealing noises even when they are not alarmed.
So the pattern is: quiet during the day, then scratching, scurrying and the occasional squeak from dusk onward, often in bursts, often moving from one part of the ceiling to another and sometimes down inside a wall. It sounds light. A raccoon sounds like a person crawling up there; a rat sounds like something small in a hurry.
The nearest confusion is squirrels, which are also light and also chew. The clock separates them. Squirrels are busiest at first light and again in the late afternoon and go quiet after dark; rats do the opposite. If it wakes you at six in the morning, read squirrel removal in Fort Worth. If it starts when the house goes quiet at night, keep reading. The full time-of-day table is on what animal is in my attic at night.
The signs that confirm it
Sound narrows it; sign confirms it. AgriLife's list of infestation signs is short and reliable: droppings, tracks in dusty places, gnawing, greasy smears wherever bodies have rubbed along walls and rafters, worn runways, and a smell that is strongest in a poorly ventilated space.
In an attic that looks like this:
- Droppings scattered along the tops of joists and beside ductwork, small and dark, more of them where the rats travel most. AgriLife's way of reading them is useful: numerous or a few, everywhere or in one place, fresh or old. Fresh and everywhere means an active, established population.
- Rub marks: a dark, greasy smear along a rafter, a pipe or the top plate of a wall, where the same bodies pass along the same route.
- Gnawing on the edges of timber, on cable sheathing, and on the corners of stored boxes. Rats gnaw because their front teeth keep growing.
- Runways through the insulation, trodden flat, usually along the edges of the attic rather than across the middle.
- A nest high up, packed into insulation or a wall cavity. AgriLife's rule is that a high nest is usually a roof rat, which is the attic species in North Texas.
- Smell at the attic hatch or in a closet below it, musky and persistent.
If the droppings are larger and concentrated in one spot rather than scattered, or the insulation has been flattened over a wide area rather than tunnelled, you are probably looking at a raccoon rather than rats, and that is a different page.
Call (571) 412-0006 and tell us what you are hearing, and when.
Contact UsWhy rats are in your attic, and how they got there
Because it is warm, dry, dark, quiet and above the reach of anything that eats them. AgriLife states that the roof rat seldom burrows and normally nests in double walls and attics, which is why the attic rat in Fort Worth is a roof rat and not the heavier Norway rat that burrows at ground level.
Roof rats climb. Brick, siding, tree limbs that touch the roof, the utility line to the house: all of them are routes to the roofline. Once there, the gap they use is usually one of the same few: a soffit return where the roof run ends, a section of fascia that has pulled away, a vent with damaged screening, or the opening around the air-conditioning line where it enters the wall. AgriLife's guidance is that openings a rodent can use should be covered with material as fine as quarter-inch hardware cloth, which gives you the size of gap that counts.
Timing matters too. AgriLife gives roof rats three or more litters a year with the heaviest production of young in winter and spring, so a noise that starts in the cooler months is often a female settling in to breed, and an attic that had a few rats in December can have a lot more by March.
Rats in the walls
The wall version of this is the same animal. Roof rats travel the wall cavities between the attic and the rooms below, which is why the scratching seems to move down behind the drywall and why people sometimes hear it in a bedroom wall rather than overhead. The signs are the same, just harder to see: droppings behind an appliance, a chewed corner low on a cabinet, a rub mark at a pipe where it passes through the wall.
One thing to know before doing anything about rats in a wall: a rat that dies in there is a different problem from a rat that lives in there. That is the whole of the next section.
What to do now, and what not to do
Do not put poison in the attic. This is the single most common way a rat problem becomes a worse one. AgriLife states that rats and mice begin dying three to ten days after feeding on anticoagulant baits, and HomeGuide's cost guide notes that poisoned rats typically die in hard-to-find locations. In a house, hard-to-find means inside a wall or under the insulation, and the smell that follows is a dead animal in the wall job with drywall repair on top of it.
Do not seal the gap and walk away. On a rodent job the sealing and the trapping go together: the entry points are closed so nothing new arrives, and traps remove what is still inside. Sealing without trapping leaves rats in the attic with nowhere to go, and the result is the same as the poison case above.
Do not sweep or vacuum the droppings. The CDC's guidance is specific on this: rodent-borne diseases are mainly spread when people breathe in contaminated air, so urine, droppings and nesting material should not be vacuumed or swept. Its method is gloves, a disinfectant or a bleach solution applied until the material is wet and left to soak, then wiping and bagging. Leave the insulation alone until the cleanup stage; the CDC's instruction for insulation contaminated with urine and droppings is to bag it for removal.
Do keep the attic hatch closed and latched, and keep interior doors shut at night if you have heard movement in a wall.
Do write down the pattern. What time it starts, which rooms it is over, whether it moves, whether it is overhead or in a wall, and how long it has been going on. That description is the most useful thing you can hand to whoever inspects it.
When to call, and what the job involves
Call when you have heard it on more than one night, or found any of the signs above. Rats do not leave an attic that is keeping them warm and safe, and the population grows while you wait.
The job runs in a fixed order, and the order is the point. Inspect the whole building to find every way in, not just the one in use. Seal the entry points with materials rats cannot chew through. Trap along the runways the rats already use and clear the traps until nothing new is caught. Then clean up: droppings, nesting material and soaked insulation out, surfaces treated, insulation replaced where it has to be. All of it is described on rodent control in Fort Worth, the sealing side in more depth on wildlife exclusion, and the cleanup on attic cleanup and restoration.
Call (571) 412-0006, or use the contact form, and tell us what you wrote down.
Frequently Asked Questions
Why am I getting rats in my attic?
Because it is warm, dry and safe, and there is a gap they can reach. Texas A&M AgriLife Extension states that roof rats seldom burrow and normally nest in double walls and attics. They climb to the roofline and use a soffit return, a pulled fascia, a damaged vent or the opening around the A/C line.
What is the fastest way to get rid of rats in the attic?
Seal the entry points and trap what is inside, in that order. Poison feels faster and is not: AgriLife puts bait deaths at three to ten days after feeding, and a rat that dies in a wall becomes a smell and a drywall repair.
What time of day do rats leave the attic?
After dark. AgriLife states that rodent activity increases after dark. Rats leave to feed at night and are back by morning, which is why the attic is quiet during the day.
Do rats stay in the attic during the day?
Mostly, yes. They rest in the nest during daylight and become active at dusk, so daytime silence does not mean they have gone.
Can you hear rats in the attic?
Usually. Scratching, scurrying, gnawing and the occasional squeak, after dark, often moving across the ceiling or down a wall. It is lighter and faster than a raccoon.
Will rodents leave an attic on their own?
Not while it is warmer, drier and safer than anywhere outside it. Roof rats breed there, with AgriLife giving three or more litters a year, so the number goes up, not down.