Home DIY rodent control
Do it yourself · Oxford, Mississippi
DIY rodent control: what actually works
Most mouse problems can be handled at home with the right traps and a tube of caulk. Most of the products on the store shelf will not help. Here is the honest list, based on CDC guidance and university research.
- Snap traps work
- Sealing works
- Ultrasonic does not
- Glue traps: CDC says no
Short on time? Jump to the verdict table.
Start here
What is the best way to get rid of mice yourself?
Seal the gaps and use snap traps. The CDC recommends snap traps baited with a small amount of peanut butter, set against the wall with the baited end touching it to form a T. University of Nebraska Extension suggests about two dozen traps for a new infestation in a 1,500 square foot house, spaced no more than 10 feet apart where mice are active. Fill small holes with steel wool held in place with caulk, and cover larger ones with hardware cloth or metal. Check traps every day. When a full week passes with no catches and no fresh droppings, the mice are likely gone. Skip glue traps, live traps, ultrasonic plug-ins and peppermint oil.
The verdict
What works and what doesn’t: the verdict on 10 DIY methods
Sources: CDC, University of Nebraska-Lincoln Extension, Iowa State University Extension and the EPA.
| Method | Works? | Why |
|---|---|---|
| Snap traps | Yes | The CDC’s recommended trap. Fast, cheap, and you can see every catch |
| Steel wool plus caulk | Yes, for small holes | The CDC’s fix for small gaps. Caulk keeps the steel wool in place |
| Hardware cloth and metal | Yes | For vents, larger holes and gaps rodents chew through |
| Door sweeps | Yes | A gap under a garage or back door is one of the most common entry points |
| Glue traps | No | The CDC says not to use them. Scared rodents urinate, which raises disease risk |
| Live traps | No | The CDC advises against them for the same reason, and released mice come back |
| Ultrasonic plug-ins | No | University research found little evidence they drive mice out. The FTC warned sellers in 2001 |
| Peppermint oil | No | No reliable evidence it keeps mice out of a house. The smell fades in days |
| Mothballs | No | A pesticide labeled for sealed containers, not attics or walls, and the fumes are not safe to breathe |
| Store poison bait | Partly | It kills, but rodents often die inside walls. The CDC says save it for infestations that persist |
The pattern: anything that claims to keep rodents away without a trap or a seal is selling hope. Rodents get used to smells and sounds. They do not get used to a sealed gap.
Trapping right
How to set mouse and rat traps the right way
Trap numbers and spacing follow University of Nebraska-Lincoln Extension; bait and placement follow the CDC.
Most failed DIY jobs use too few traps in the wrong place. Mice seldom travel more than about 50 feet from their nest and food, and they run along walls, so a trap in the middle of the floor catches nothing.
Rats are more cautious than mice. For rats, the CDC suggests pre-baiting: put bait on unset traps for a few days so they get used to them, then set them.
A female mouse can have 5 to 10 litters a year with 5 or 6 young each, so speed matters. A dozen traps this week beats three traps for a month.
- Use the right size: mouse traps for mice, rat traps for rats
- Bait with a pea-sized dab of chunky peanut butter
- Set the baited end against the wall, forming a T
- Put traps behind appliances, in cabinets and dark corners
- Space them no more than 10 feet apart where mice are active
- About two dozen traps for a new infestation in an average house
- Check every day, wearing gloves, and reset
- Keep going until a full week passes with no catches
Done trapping? Clean up droppings the safe way with our CDC cleanup guide.
Sealing gaps
How to seal the gaps mice and rats use
Sealing is the part that makes trapping stick. Materials follow the CDC’s Seal Up guidance.
Find the gaps
A mouse fits through a hole the width of a pencil, about 1/4 inch. Check where pipes and wires enter, under sinks, behind the stove and dryer.
Small holes
Pack with steel wool or copper mesh, then caulk over it so it stays put. Foam alone gets chewed through.
Larger holes and vents
Cover with 1/4 inch hardware cloth, metal sheeting or mortar. Screw or staple it down tight.
Doors and the garage
Add door sweeps and check the garage door seal. Daylight under a door means a mouse can get in.
Roof rats come in at the roofline: soffits, gable vents and roof returns. That work is at height, and it is where most DIY sealing jobs stop. More on professional exclusion.
What to buy
A DIY rodent kit for an Oxford home
Under $100 for most homes, and nothing on it plugs into the wall.
You do not need much. Skip the plug-in gadgets and the scented pouches and spend the money on more traps and better sealing material.
Everything on this list is sold at hardware stores around Oxford. Buy more traps than you think you need.
- Two dozen wooden or plastic snap traps (mouse size)
- Six or more rat-size snap traps if you suspect rats
- A jar of chunky peanut butter
- Steel wool or copper mesh
- A tube of exterior caulk and a caulk gun
- A roll of 1/4 inch hardware cloth and tin snips
- Door sweeps for exterior and garage doors
- Rubber gloves, paper towels and a spray bottle of disinfectant
- A flashlight for checking behind appliances
Pets or small kids at home? Put snap traps inside a covered trap box or behind appliances where only rodents can reach them. Our page on pet-safe rodent control covers the details.
When it is time to call
Still catching mice after two weeks?
That means there is a gap you have not found. Call or send the form. We find every entry point, seal it with metal and finish the trapping. The price is in writing first.
When DIY stops working
Signs DIY is not enough
DIY handles most mice. These six signs mean the problem is bigger than a kitchen.
Catches keep coming
Still catching after two weeks means new rodents are getting in faster than you can trap them. There is an open gap.
It is rats, not mice
Rats are wary of new objects, bigger, and often come in at the roofline. They take more traps, more patience and work at height.
The roof or crawl space
Soffits, gable vents and crawl space vents are where many Oxford homes leak. Ladder and crawl space work is where most people stop.
Chewed wiring
Gnawed wires in the attic or walls are a fire risk. That is not a wait-and-see problem.
A smell in the wall
Usually a rodent that died out of reach, often after poison bait. It needs finding, not more bait.
Droppings over a big area
Heavy droppings in the attic or crawl space need careful cleanup and sometimes insulation removal.
Wondering what a professional job should cost? See our 2026 cost guide and the quote checklist.
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Straight answers
DIY rodent control questions
Does peppermint oil keep mice away?
Not in any reliable way. There is no good evidence that peppermint oil keeps mice out of a house, and the smell fades within days. Mice that have food and shelter inside will put up with a smell. Sealing the gap is what keeps them out.
Do ultrasonic pest repellers work?
University of Nebraska-Lincoln Extension found little evidence that electronic, sound, magnetic or vibrating devices drive established mice out of buildings, and in 2001 the FTC warned makers and sellers about unsupported claims. Save the money for traps.
Why does the CDC say not to use glue traps?
Glue traps and live traps scare rodents, which causes them to urinate. That increases the chance of contact with germs in their urine. Snap traps kill quickly and are the CDC’s recommendation.
What is the best bait for mouse traps?
A small amount of chunky peanut butter, according to the CDC. Use a pea-sized dab. Too much lets a mouse eat without setting off the trap.
Is store-bought rat poison safe to use?
Consumer rodent baits must come in bait stations, and the strongest anticoagulants are only sold to professionals. Even so, poisoned rodents often die inside walls, and pets can be harmed. The CDC suggests poison only for infestations that persist after trapping.
Will a cat get rid of mice?
Rarely on its own. Extension research notes that predators seldom control mice because mice live in places cats cannot reach. A cat may catch a few, but the gap that lets them in stays open.
How long does DIY mouse control take?
For a small problem with traps and sealing, often one to three weeks. The CDC’s test for done is a full week with no catches and no new signs. If you are still catching after two weeks, there is usually a gap you have not found.
Keep reading
Related rodent help for Oxford homes
From the blog: questions people ask
Sources
Last reviewed October 2026 by the Rodent Control Oxford team. Biology and control standards follow Mississippi State University Extension and the CDC. Price ranges are labeled benchmarks; your price comes in writing after we inspect.
Oxford & Lafayette County
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