SAR Control de Plagas — Inspeccionar · Corregir · Proteger
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Rodent Control in Querétaro

SAR Control de Plagas provides professional rodent control across the Querétaro metropolitan area. We follow a strict exclusion-first approach: we locate and seal every entry point larger than 6 mm before placing any station, and we never use loose poison. The budget is defined after the on-site inspection, based on property size and how many entry points need sealing.

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Don't ignore these signs

Rodent droppings

Small droppings in kitchens, pantries, storage areas, behind furniture or along walls — a clear sign of active presence.

Fresh gnaw marks

Bite marks on electrical cables, wood, cardboard, food packaging, pipes or door frames. Gnawed cables are a real fire hazard.

Nighttime noises

Scratching, running or thumping sounds in ceilings, walls, floors or storage areas after dark — rodents are mostly nocturnal.

Distinctive odor

Strong, musky odors associated with urine or accumulated activity in enclosed spaces, especially in poorly ventilated areas.

Burrows or grease marks

Material remnants near foundations, grease smudges along walls from repeated contact, or visible runways used by rodents.

Daytime sightings

Seeing rats or mice during daylight usually indicates a large, active population competing for shelter — the infestation is already advanced.

For your home, business or industry?

HOME

Houses and apartments with house mouse, black rat or Norway rat activity. SAR prioritizes sealing entry points and targeted control.

  • Identification of every entry point before placing any station or bait.
  • Plan and cost defined after the on-site evaluation — no fixed price list.
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BUSINESS

Retail locations, offices, restaurants and food businesses that need to control rodents and document actions for sanitary inspections.

  • Numbered station map and a log of every check — evidence ready for audits.
  • NOM-256-SSA1-2012 and COFEPRIS criteria considered where applicable.
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INDUSTRY

Warehouses, manufacturing plants and industrial parks where control requires a technical study given the scale, processes and critical points.

  • Technical evaluation of access points, perimeter and interior at industrial scale.
  • Sealing and control plan tailored to site conditions, with full documentation.
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PREVENTIVE

Recurring monitoring for properties with a history of activity or high exposure to rodents.

  • Periodic review of entry points, station condition and bait consumption.
  • Ideal if you've had a rodent problem before or your area has known activity.
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Frequently Asked Questions

What rodent species are present in Querétaro?+
SAR Control de Plagas identifies three main urban species in the Querétaro metropolitan area: the house mouse (Mus musculus — small, lives inside walls, furniture and false ceilings), the Norway rat (Rattus norvegicus — large, digs ground-level burrows, lives in drains and basements) and the black rat (Rattus rattus — medium, excellent climber, lives in roofs, attics and trees near the house). There are also local field species (Peromyscus, Sigmodon) that enter homes when their natural habitat is disturbed by construction.
Do mice and rats behave the same way?+
No, and that changes where control must be placed. The house mouse is curious, explores anything new, moves in a small radius and needs very little water — that's why it lives indoors, in furniture, drawers and false ceilings. The Norway rat is wary, avoids new objects for several days before approaching, digs burrows at ground level and prefers drains and basements. The black rat climbs well and prefers heights: roofs, attics and trees touching the house. A control plan that ignores these behavioral differences ends up placing stations where the rodent never even passes.
What diseases do rodents transmit?+
Urban rodents (house mouse, Norway rat and black rat) are mainly associated with salmonellosis and act as a reservoir for the hepatitis E virus; the Norway rat is additionally linked to leptospirosis through its urine. Hantavirus is mainly associated with wild field rodents (such as Peromyscus), not so much with urban species. In all cases, droppings and urine contaminate food and surfaces — a single rat spoils far more food than it consumes. This is a serious health risk, especially in homes with children.
What kind of economic damage do rodents cause?+
Rodents damage or contaminate a significant share of stored food worldwide. They gnaw electrical cables — creating real fire and short-circuit risks — as well as pipes, wood and structural elements. In a home or business they affect equipment, merchandise and the building itself, so the real cost of an infestation is usually much higher than the cost of professional control.
How do rodents get into my house?+
Through any gap larger than 6 mm in walls, cracks, unsealed pipe penetrations, poorly fitted doors or vents. A Norway rat can enter through a ½-inch gap; the house mouse can squeeze through even smaller openings. They are driven indoors by three needs: food, water and shelter. Sealing these entry points is the single most important step in lasting control.
Why do rodents come back after using poison?+
Poison only kills the individuals that eat it. Rodent populations are large and reproduce quickly — if entry points aren't sealed, new individuals move in from surrounding areas to replace those that died. That is why SAR Control de Plagas follows an exclusion-first approach: we seal every entry point before placing any station. Exclusion is what makes the control last.
How does SAR Control de Plagas control rodents?+
We follow a strict sequence. First, we locate every entry point larger than 6 mm and seal it with durable materials — metal, not plastic, which rodents can gnaw through. Then we place secure, locked stations with traps or bait at key points along runways and near activity. We run weekly monitoring during the first month, then switch to monthly checks. We never use loose poison where children, pets or non-target animals could reach it.
I run a food business — is the control different?+
Yes, and significantly stricter. Beyond solving the infestation, we must leave documented evidence for sanitary inspections and food safety audits: a map with numbered perimeter stations, a log of every check, and control without loose poison in product zones. The focus is preventive — sealing access, storing product off the floor and away from walls, organizing waste. A single rodent detected during an audit can trigger a serious observation or even closure. SAR designs the program according to the type of establishment and the regulation that applies to it.
What about farms or livestock settings?+
In farms and livestock operations the challenge is that feed and shelter are abundant — grain, balanced feed, bedding — so populations grow fast and the damage is twofold: rodents consume and contaminate animal feed (with salmonellosis and leptospirosis risk for the animals too) and gnaw at wiring and installations. Control relies on perimeter stations and, above all, on storage discipline: pallets separated from walls, grain in sealed silos or containers. It is ongoing management, not a one-time visit.
How is the cost determined?+
After the on-site inspection. The budget depends on property size and on how many entry points need sealing — which is exactly what makes the control last. SAR explains the findings and the client approves the scope before any work begins. Worth noting: an infestation detected during a sanitary audit can cost far more than the treatment itself, between losses, product contamination and closure time. Addressing it early is almost always cheaper than resolving a crisis.
Is the treatment safe for children and pets?+
Yes. SAR uses locked, sealed bait stations that children and pets cannot open or access. The sealing work is pure physical labor — metal, mesh, foam — with no chemicals involved. Only the monitoring visits require a trained technician on site. We never place loose bait in areas accessible to non-target animals.
How long until I see results?+
Sealing entry points typically takes a few days. If exclusion is done correctly, you should stop finding fresh signs — droppings, gnaw marks, nighttime noises — within 2 to 3 weeks. A fully resolved situation usually takes 30 to 45 days. Skipping the follow-up visits is the most common reason the problem returns.

Does this sound like your situation?

Every property is different. An evaluation lets us confirm whether this matches your case and recommend only the measures that genuinely add value — no more, no less.

We never recommend a treatment we can't technically justify.

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