DIY mouse control or an exterminator: how to decide
Updated .
Plenty of mouse problems can be handled by a careful homeowner. Others keep coming back however many traps you set. This guide helps you work out which one you have, what DIY gets right and wrong, and what a professional visit actually adds.
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Should I deal with mice myself or call an exterminator?
Do it yourself if you have seen one mouse, found droppings in a single spot, can see where it got in, and have no young children or pets who could reach bait or traps. Call an exterminator if signs are in several rooms, you hear activity most nights, or mice keep coming back after a few weeks of trying.
The deciding factor is usually not the mouse. It is whether you can find and close the way in, and whether you can reach the places they use.
When DIY is a reasonable choice
- One sighting and a few droppings in one place, with no noises in the walls and no chewed food in other rooms.
- A clear entry point you can fix yourself, such as a worn door sweep or a gap around a pipe at ground level. Our guide on how mice get in shows what to use.
- You can check traps every day and dispose of mice safely, wearing gloves and washing your hands afterwards.
- Nobody can reach the traps. No toddlers, and no dogs or cats that explore under appliances.
In that situation, sealing the gap, storing food in hard containers and placing a few snap traps along the walls can end it. If you saw a mouse for the first time, start with our guide on what to do if you saw a mouse in the house.
When DIY usually stops working
These signs mean the problem is bigger than a few traps can handle:
- You keep catching mice for weeks and more keep arriving. That points to an entry point you have not found, or a group nesting inside a wall.
- You hear scratching in the walls, ceiling or attic at night. See scratching in the walls at night.
- Droppings appear in several rooms, or they are the bigger, raisin-sized kind that points to rats. Our guide to the signs of rats in the house explains the difference.
- Mice are using places you cannot reach: inside walls, under floors, above a ceiling or in an attic.
- You have already tried for a month or more, or the signs come back after you clean up.
The most common DIY mistakes
- Traps in the open. Mice run along walls, so traps need to sit against the wall, not out in the middle of the floor.
- Treating the mice but not the gap. Without sealing, new mice replace the old ones. Our guide on whether mice come back after extermination explains why.
- Loose poison. Pellets and blocks left where children, pets or wildlife can reach them are the most common cause of accidents. Our guide on bait station safety covers this in detail.
- Sealing everything too soon. If you close every gap while mice are inside the walls, they can die there and leave a smell, or chew a new way in.
- Relying on gadgets and smells. There is little good evidence that ultrasonic repellers work for long, and peppermint oil does not reliably keep mice away. Neither closes the gap mice are using.
- Stopping too early. A quiet week does not always mean the mice are gone.
What does a professional add?
- A systematic inspection. Finding the entry points and travel routes is most of the work, and it is hard to do well without having done it many times.
- Tamper-resistant, locked bait stations placed where mice travel and where children and pets cannot reach. We do not use snap traps or glue traps.
- Professional-grade products used by licensed Ontario exterminators, with the right placement and checks.
- A photo report of the entry points, so you can see what needs sealing.
- Follow-up and a guarantee. Our mouse and rat control includes a follow-up visit and a six-month guarantee: if mice or rats return to the treated areas, we re-treat for free.
A middle path: you prepare, we treat
Many people do part of the work themselves. Move food into hard containers, clear clutter and cardboard from along walls, fix obvious gaps and keep a note of where and when you hear or see signs. That helps a technician find the route mice use and makes treatment work faster.
If you are not sure how big the problem is, an inspection answers that quickly.
Think about the whole bill, not just the first purchase
Traps, bait, sealing materials and many hours of your time add up, especially if the problem lasts for weeks or comes back. Our mouse and rat control is a flat $299 plus HST for houses, townhomes and condos, including the follow-up visit and the six-month guarantee. Sealing is a separate rodent proofing service, quoted after an inspection. See all prices on our pricing page.
Quick answers about DIY mouse control
Do snap traps work?
They can catch a single mouse. With several mice, or signs in more than one room, traps alone rarely keep up, and they do not stop new mice coming in.
Are store-bought bait stations as good as professional ones?
A locked station is safer than loose poison, but where it goes matters as much as the box. Professionals place stations along the routes mice use and check them on a follow-up visit.
Can I treat mice myself and hire someone to seal?
Yes, many people do. Just treat first and seal once activity has stopped, so mice are not trapped inside.
How long should I try DIY before calling?
If you still see signs after one to two weeks of well-placed traps and sealed gaps, an inspection will save you more time than another round of trying.
Is it safe to clean up droppings myself?
Yes, if you wet them with disinfectant, wear gloves, do not sweep or vacuum dry droppings and wash your hands afterwards. Our guide on the signs of mice in the house has the steps.
Book mouse control online
Pick a day and time window on our booking page and tell us what you have already tried. Mouse and rat control includes a full inspection of the basement, attic access, garage and exterior, tamper-resistant locked bait stations placed away from children and pets, a photo report of the entry points we find, small gaps sealed with steel mesh on the first visit, a follow-up visit, and a six-month guarantee. Questions first? Read our pest control FAQ.
Book online See mouse & rat control ($299 + HST)
Not sure what you're dealing with? Call 343-341-2815 and describe it. We'll tell you what it is and what it costs.
Keep reading
- Signs of mice in your house
- Are mouse bait stations safe for pets and kids?
- Do mice come back after extermination?
Sources
- Rats and mice, Health Canada
- Hantavirus: spread, prevention and risks, Public Health Agency of Canada
General information for homeowners. Every home is different; your technician will confirm what applies to yours.
Let's make them gone.