You've caught three mice this week. Then four more next week. The traps keep working, but somehow there are always more mice.
If that sounds familiar, you've already figured out the hard truth: traps catch mice, but they don't solve mouse problems. Here's why, and what actually does.
Why Mice Keep Coming Back
When you set traps, you're treating one symptom of the problem — the mice currently inside. You're not addressing what's letting them in or what's keeping them comfortable.
A typical Guelph house has:
- 6 to 20 potential entry points around the foundation, utilities, and roofline
- Plenty of food sources mice are happy to settle for (pet food, crumbs, garbage, even dish sponges)
- Quiet, undisturbed spaces (basements, attics, wall voids) for nesting
Until those three things are addressed, every mouse you catch is being replaced by another one — sometimes from the same litter, sometimes from outside, often from a population you don't know exists in your walls.
The Math Most Homeowners Miss
A female mouse reaches breeding age at 5–6 weeks old. She can have 5–10 litters a year, with 5–6 babies per litter. A single pair of mice in your home in early fall can become 30+ by spring.
Snap traps catch mice one at a time. The population reproduces faster than you can trap.
Where DIY Falls Short
There are four specific places DIY rodent control breaks down:
1. Entry point detection. Mice can squeeze through a hole the size of a dime. The gap behind your dryer vent, the space where the gas line enters the house, the crack at the corner of the soffit — most homeowners can't spot all of them. Pros do this for a living and find them in minutes.
2. Trap placement. Mice run along walls and edges, not across the middle of a room. Traps placed in the open catch almost nothing. The right placement, in the right direction, makes a 10x difference.
3. Bait choice. Cheese is a myth. Mice are far more interested in peanut butter, seeds, or nesting material like cotton or dental floss. The wrong bait wastes weeks.
4. The sealing step. This is the one almost no DIY effort gets to. After the population is reduced, every entry point needs to be permanently sealed with materials mice can't chew through — steel mesh, sealant, sheet metal, hardware cloth. Spray foam alone doesn't cut it; mice chew through it.
Without that last step, you're stuck in the cycle.
What Actually Gets Rid of Mice
Real rodent control is a two-part process.
Part 1: Eliminate the current population.Strategic trapping and locked bait stations placed where mice actually travel, with the right bait, refreshed and monitored over several weeks.
Part 2: Seal the building.A full inspection of the exterior, identifying every gap, crack, vent, and utility entry point — then sealing each one with the right materials for that location.
When both parts are done correctly, the problem ends. When only Part 1 is done, the problem keeps repeating.
How Summit Handles It
Tateum handles every rodent job in Guelph personally. A typical visit includes:
- A full inside-and-outside inspection
- Targeted trap and bait placement
- Identification and sealing of every entry point
- A follow-up visit to confirm the problem is gone
Most rodent jobs are wrapped up within 2–4 weeks. After that, a quarterly prevention plan keeps the building protected — so you're not calling a pest control company every fall when the temperature drops.
Frequently Asked Questions
How long should I keep DIY traps out before calling a pro?If you've been catching mice for more than 2 weeks and still seeing fresh activity, the population is bigger than your traps can keep up with. Get a professional inspection.
Can I just seal entry points myself?You can try, but most homeowners miss the smaller and harder-to-reach gaps. The cost of a miss is the whole problem repeating.
What's the difference between Summit's trapping and what I'm doing now?Placement, products, and the inspection that comes with it. We're identifying why mice are getting in, not just where the next one will get caught.
Is rodent control safe with kids and pets in the house?Yes. We use locked bait stations and place traps where pets and kids can't reach them. Tateum will walk you through everything before placing it.
Stop Catching Mice. Start Getting Rid of Them.
If you've been at this for weeks and the problem isn't ending, the issue isn't the traps — it's the missing half of the job. Summit Pest Control handles rodent removal and full entry-point sealing across Guelph and surrounding areas.
Call (226) 780-6446 or request a quick estimate today.