How to Get Rid of Mice in Your Home: A Complete Guide
Step-by-step guide to eliminate mice: seal entry points, set traps, remove food sources, and know when to call an exterminator.
Finding mice in your home is stressful, but getting rid of them is entirely possible if you act fast. The key is combining three strategies: eliminating their entry points, removing what attracts them, and actively trapping the ones already inside. Here's what actually works.
Start by Sealing Entry Points
Mice can squeeze through openings as small as a dime. Before you set a single trap, walk around the outside of your home and look for cracks, gaps, and holes where pipes, wires, or vents pass through walls. Check the foundation, siding, and around door and window frames.
Pack steel wool tightly into these openings. Mice won't chew through it. For larger gaps, use steel wool first, then seal around it with caulk or foam sealant. Replace any loose or damaged weather stripping on doors and windows. Fix crumbling mortar in brick or stone. These aren't permanent cosmetic fixes, but they're your first line of defense against new mice entering.
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Don't forget the less obvious spots: gaps under fascia boards, holes where dryer vents connect, cracks around foundation sills, and spaces where utilities enter the crawl space or basement. Mice travel along walls and edges, so pay special attention to corners and transitions between materials.
Remove Food Sources and Clutter
Mice need three things to survive: shelter, water, and food. You can't eliminate water entirely, but you can remove the other two.
Keep all food in airtight containers, especially pantry staples like flour, cereal, rice, and pet food. Don't leave crumbs on counters or under appliances. Take out trash regularly and use sealed containers. Clean up spills immediately. Mice are attracted to grease, so wipe down stovetops and avoid leaving dirty dishes out overnight.
Next, declutter. Piles of boxes, old clothes, newspaper, and unused items are perfect nesting material. Clear out garages, attics, basements, and sheds. Mice hide and breed in undisturbed spaces. Remove storage boxes and organize what you keep. Stack firewood at least 20 feet away from your home, not against the house.
Set Traps in the Right Locations
Traps are your active defense. There are two main types: snap traps (lethal) and humane live-traps.
Snap traps kill quickly and reduce the risk of disease spread from handling dead rodents. Humane traps let you relocate mice alive, though effectiveness depends on where you release them and whether they survive. Some people use a combination of both.
Place traps along walls where you've seen mouse droppings or heard activity. Mice run along edges, not through open spaces. Set traps perpendicular to the wall so the trigger faces the baseboard. Bait them with peanut butter, chocolate, or nesting material like cotton. Check traps daily and dispose of dead mice carefully (wear gloves, seal in a bag, and throw away).
You'll need more traps than you think. Set them throughout the affected area, in attics, basements, crawl spaces, and behind appliances. A small infestation might need 5-10 traps; a larger one could require 20 or more. Keep setting fresh traps even after you catch mice for the first week or two.
Understand Why Speed Matters
Mice breed fast. A single female can produce 5-10 litters per year, with 5-6 pups per litter. That means a small problem becomes a major infestation within weeks. This is why waiting or taking a slow approach rarely works.
The moment you notice droppings, hear scratching at night, or spot a live mouse, start sealing and trapping immediately. Don't assume one mouse means one mouse. Assume there are more.
When to Call a Professional Exterminator
If you've sealed entry points, set traps for two weeks, and are still catching mice or seeing fresh droppings, it's time to call a licensed pest control professional. They have access to stronger treatments, better knowledge of your local mouse populations, and tools to locate hidden nests.
A professional exterminator can also inspect your home more thoroughly and recommend structural or maintenance improvements you might have missed. They'll often guarantee their work for a set period, meaning they'll return if mice come back.
Costs for professional pest control vary widely depending on your region, the size of your home, and the severity of the infestation, but expect to pay anywhere from a few hundred to over a thousand dollars for a full inspection, treatment plan, and follow-up visits. Many companies charge per visit rather than a flat rate.
Prevention After You've Won
Once you stop catching mice for a full week, you're likely in the clear. But mice can return, so keep doing the work.
Continue checking and maintaining entry point seals every six months. Keep your home clean and clutter-free. Don't let food sit out. Store pet food in sealed containers. Keep an eye out for droppings or activity during fall and winter, when mice are most likely to seek shelter indoors.
Consider keeping a few traps set in high-risk areas like the basement or attic year-round as an early warning system. Catching one mouse immediately is much easier than dealing with a breeding population later.
Common questions
Humane traps let you relocate mice alive, but success is limited. Relocated mice often die from stress, lack of familiar territory, or predation. Even if they survive, you're moving the problem elsewhere. Most wildlife experts and pest control professionals recommend lethal control as more humane because it's quicker and more reliable. Check your local regulations, as some areas restrict relocation.
Peanut butter, chocolate, and nesting material like cotton or dryer lint work well. Bait with small amounts; too much bait makes it easier for mice to steal it without triggering the trap. Change bait every few days if traps aren't going off. Mice are curious but cautious, so don't expect instant results.
If you catch the problem early (one or two mice), it might take a week or two with active trapping. A larger infestation can take several weeks to a month or more, especially if you're doing it yourself. Professional exterminators can often resolve it faster with stronger methods, though follow-up visits may still be needed.
Rodenticide (poison) works, but it has real downsides. Poisoned mice often die in walls or inaccessible spaces, creating odor problems. Poison can also harm pets and wildlife if they eat a poisoned mouse. Traps give you more control and cleaner results. If you're considering poison, consult a licensed pest control professional first.
