- Exterminators get rid of mice through a process called exclusion–sealing possible openings in your home that mice may be using to enter.
- If exclusion isn’t possible, professionals place snap traps around areas with droppings, or they use bait stations to kill large mice colonies over time.
- Fumigation is only used if mice pose a threat to an entire building and all the other methods do not work.
How do exterminators get rid of mice?
To get rid of mice, exterminators seal entryways and use snap/bait traps. First, professionals seal any gaps that mice may use to enter your home–a process called exclusion. If this method doesn’t work (or isn’t possible), they use snap traps or bait stations to kill small mice colonies. For severe infestations, fumigation may be the only solution.
Sealing Home Entryways
Exterminators get rid of mice by sealing off possible home entryways. Typically, mice don’t live inside your house–they live off-site and only stop by for food. To prevent mice from entering your space in the first place, professionals use a method called exclusion, where they search for any structural openings (cracks, holes) in your home. Any gaps are filled with materials that mice can't chew through. It’s important to seal any potential openings because mice can fit through a hole as small as 0.25 inches (0.64 cm) in diameter! If you'd like, search for potential entryways in your home and block them with wire screening or sheet metal. If exterminators can’t find any entryways, trapping mice is the next step.
Snap Traps
Professionals set up snap traps to eradicate small mice populations. If exclusion isn’t possible (or effective), exterminators position snap traps around your home, especially in areas with gnaw marks and/or rodent droppings. The most common trap is the traditional snap trap with a wooden base and metal spring, but some exterminators prefer using modern plastic ones. Traditional snap traps are the safest extermination option because they don’t involve any poisonous materials that could harm pets or small children. They’re also relatively cheap and easy to set up on your own! Trap placement is key to successful extermination. Most professionals place traps in pairs against a wall, vertically with their triggers closest to the wall or horizontally with their triggers facing opposite sides. If the snap trap doesn’t work, it could signal that there’s a large female mice population. Female mice hunt for nesting materials (rather than food), so exterminators may place cotton balls or paper towels in the traps instead.
Bait Stations
Exterminators use bait stations to kill large mice colonies gradually. Rodents are extremely sensitive so the toxicity of bait must be low. Bait boxes are ideal because they provide an uninterrupted, low-dose supply for 2 weeks. Inside the box, exterminators leave rodenticide (usually an anticoagulant or blood-thinner) that slowly–and fatally–builds up in the rodent’s body. An immediate kill is undesirable because it makes the bait ineffective–other mice learn that the food is poisoned! If you don’t believe you have a severe mice infestation, you can set up your own bait station without calling an exterminator!
Fumigation
For severe infestations, exterminators use fumigation as a last resort. Fumigation requires tenting your home and filling it with poisonous chemicals, so most extermination companies do not recommend (or even offer) this service for mice. Exterminators only use this method if localized approaches (traps and bait) are ineffective and mice pose a threat to an entire structure. Choose your exterminator carefully. Ask to see their company license, and call your local pesticide regulatory agency if you have any concerns. Fumigation is expensive–with costs ranging from $2,000-6,000!
How long does extermination take?
Mice extermination usually takes one month to complete. It depends on the size of the colony and the extermination method, but mice extermination takes 3-5 weeks in a residential area. If you live in a rural area, rodents will be an ongoing problem that needs to be addressed monthly, but most homes only require one treatment.
Is mice extermination permanent?
Permanent mice extermination cannot be guaranteed. Mice are more challenging than insects to exterminate. Most extermination companies state their services last one year, but every home is unique–some houses have severe construction problems that an exterminator cannot work around. You may have to hire a contractor to fix these issues for a long-term extermination solution.
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