A lot of people are surprised Las Vegas has a rat problem at all. It does, and it has grown over the last decade, spreading from the older tree-lined core into new-build attics across the valley.
Roof rats earn the name. Unlike the ground-dwelling Norway rat, they climb and nest high, so the evidence shows up in your attic, upper walls, and roofline rather than the basement or crawlspace. If you are hearing something at night, that is usually the first tip, because they are most active after dark.
If several of these line up, you have an active population rather than a one-off visitor. The next question is not just how to remove them, but how they got in, because that gap is the whole ballgame.
Two very different neighborhoods drive most roof rat work in Las Vegas, and they are worth separating. The older central areas near downtown, with mature trees, irrigated yards, and decades-old housing, carry the heaviest established pressure. Mature landscaping gives roof rats food, water, and the climbing routes they love, and aging rooflines give them easy entry. The city of Las Vegas core sees the most of this.
[UNIQUE INSIGHT] The second pattern surprises people: brand-new attics. You would think a fresh build would be sealed tight, but new construction often leaves roof vents unscreened, gaps where the roof meets the wall, and utility penetrations the trades never closed. A new home with a block wall or a young tree against the eave hands a roof rat a ladder straight to those gaps. So the problem is not old versus new, it is sealed versus open, and most homes of any age have a few open routes the owner never noticed.
The desert climate adds to it. When summer surface temperatures run past 110 for weeks, an attic with shade and the occasional drip is prime real estate. Roof rats do not hibernate or move on; once they find shelter from the heat, they settle in and breed. That is why rodent control calls hold steady across the valley rather than spiking in one season the way scorpions do.
This is the single most important thing to understand about rats. Trapping removes the rats that are inside right now. It does absolutely nothing about the hole they used to get in. So you trap out five rats, feel relieved, and within a few weeks a new one finds the same open roof vent and moves into the same warm attic. The nest site is still attractive and the door is still open.
Real removal is two jobs done together. First, trap and remove the active population, with the traps placed along the runways the rats are actually using rather than scattered randomly. Second, do the exclusion, sealing roof lines, vents, weep screeds, garage gaps, and utility penetrations with materials rats cannot chew through. [PERSONAL EXPERIENCE] In our experience, exclusion is the part that separates a fix from a recurring service call. Homes where we trap and seal go quiet and stay quiet. Homes where the owner only wanted trapping to save money almost always call back the same season.
Cost reflects this. Rodent control with exclusion usually runs $250 to $600 depending on how much sealing the structure needs. A tight home with one or two entry points lands near the bottom; an older home with many roofline gaps trends toward the top. The sealing is where the lasting value is, which is why it is built into the service rather than offered as an afterthought.
Roof rats are not just a nuisance. Their droppings and urine can carry disease organisms, they contaminate stored food, and they bring fleas and mites indoors. You should not handle droppings or nesting material bare-handed, and proper attic cleanup after removal is part of finishing the job rather than an extra.
The damage side is just as real. Rats gnaw constantly to manage their growing teeth, and attic wiring is a favorite target. Chewed insulation on a wire is a genuine fire risk, and gnawed HVAC ducting and water lines cause their own expensive problems. The longer a population stays, the more of this accumulates. Our FAQ covers what cleanup and sealing involve, and the honest answer is that catching it early keeps both the health risk and the repair bill smaller.
Roof rats nest high, so the signs are in your attic, roofline, and upper walls: scratching or scurrying overhead at night, droppings in the attic, gnaw marks on roof edges, and grease smudges along beams. House mice stay lower and leave smaller droppings. Roof rats also leave runways along fence tops and tree limbs touching the roof.
Roof rats can carry disease organisms in their droppings and urine, contaminate stored food, and bring fleas and mites into a home. Their constant gnawing on wiring is also a real fire risk. You should not handle droppings or nesting material without protection, and attic cleanup after removal is part of doing the job right.
Trapping removes the rats that are already inside, but it does nothing about the gaps they used to get in. Without exclusion, sealing roof lines, vents, weep screeds, and utility penetrations, a new rat moves in within weeks along the same route. Trapping plus sealing is the only combination that actually lasts.
Rodent control with exclusion usually runs $250 to $600 depending on how much sealing the structure needs. A tight home with one or two entry points lands near the bottom; an older home with many roofline gaps trends higher. Trapping alone is cheaper up front but rarely solves the problem, so the exclusion is where the value is.
New-build attics are surprisingly easy to enter through unsealed roof vents, gaps where the roof meets the wall, and utility penetrations left open by trades. Roof rats are excellent climbers, so a tree limb or block wall against the house gives them a ladder. New construction is not immune; it just has different gaps than older housing.
No. Once roof rats establish a nest in an attic with shelter from the desert heat, they stay and breed. Removing obvious food and water helps reduce the draw, but an established population needs active trapping and sealing. Waiting it out usually means more rats, more droppings, and more gnawing damage.
We are a licensed, local crew, and we trap the active rats and then seal the structure so the next one cannot follow. Rodent control with exclusion usually runs $250 to $600 depending on the sealing your home needs.
Last updated: May 28, 2026.
