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Why Rodents Start Moving Indoors: A Recent Job & Some Homeowner Tips

Category: Holiday

Published: 06 Oct, 2026

By Kyle Deal, Co-Owner, Deal Pest Control LLC

What I Walked Into

October is when I start reminding homeowners around Surprise and the West Valley to pay closer attention to signs of rodents.

We don't get the same kind of fall weather people see in colder parts of the country, but conditions still start changing. Nights get cooler, food and water sources outside change, and rats and mice start looking for protected places where they can settle in.

A couple of weeks ago, I got a call from a homeowner who had started hearing something moving around in the garage at night.

When I got there, the garage was clean and organized. There wasn't trash sitting around or anything that would make you immediately expect a rodent problem.

That's something I point out pretty often.

You can have a very clean home and still end up with rodents. If they find a small way inside and there's food, water, or shelter available, that's sometimes all it takes.

The Problem

I started in the garage because that's where the homeowner had noticed the activity.

Behind one of the storage shelves, I found more droppings along the wall. There were also signs that something had been moving through the same area repeatedly.

From there, I started looking for the way in.

Near one side of the garage, there was a small gap that didn't look like much at first glance. To us, it was just a little opening.

To a rodent, it was an entrance.

I checked the rest of the exterior as well because once rodents start using a property, I don't like assuming there's only one possible access point.

The homeowner was mostly frustrated because they didn't know how far the activity had spread.

They were wondering if the rodents were still just in the garage or if they had already made their way into the walls or attic.

That's usually when a small rodent problem starts feeling like a much bigger one.

You hear one noise or find a few droppings, and suddenly you're wondering what's happening everywhere you can't see.

The Process

The first thing I wanted to do was understand where the rodents were traveling and what was keeping them around.

I checked the garage, exterior walls, roofline, utility areas, and other common entry points around the home.

Then I looked at possible food and water sources.

The damaged pet food bag was an obvious one, but there were a couple of other things worth addressing too. There was some storage sitting close to the garage walls, and a few areas outside provided good cover for rodents moving around the property.

I showed the homeowner what I'd found and explained what I thought was happening.

From there, we put together a rodent control plan focused on the active areas and the ways rodents were getting onto and into the property.

That's an important part of rodent control.

You can deal with the rodent that's there today, but if you leave the same food sources and openings available, another one can eventually take its place.

The goal is to solve the current problem and make it harder for the next one to start.

The Outcome

Over the next couple of weeks, the homeowner stopped noticing new droppings around the garage.

The nighttime noises disappeared too.

When I checked back with them, they told me they weren't walking into the garage every morning wondering what they were going to find.

That might sound like a small thing, but anyone who's dealt with rodents knows exactly what I mean.

Once you know something has been moving around your home at night, you start paying attention to every little sound.

They had also moved the pet food into a sealed container, reorganized some of the storage, and kept a closer eye on the areas we had discussed.

Those changes helped remove some of the things that had made the garage attractive in the first place.

More than anything, they felt like the garage was theirs again instead of a place they had to inspect every morning.

DIY Advice

There are a few things I recommend homeowners around Surprise and the West Valley do as we move into October.

1. Check around garage doors, exterior walls, vents, pipes, and utility lines for small gaps that rodents could use to get inside.

2. Store pet food, bird seed, and other dry food in containers with secure lids instead of leaving them in bags.

3. Keep garage storage organized and try not to leave boxes or other items packed tightly against walls for long periods.

4. Trim bushes and other landscaping away from the house so rodents have fewer covered areas to travel through.

5. Pick up fallen fruit, spilled bird seed, and other food sources around the yard that can attract rodents.

The earlier you notice those signs, the easier it usually is to figure out what's happening before rodents have more time to settle in.

"It's brighter than before!"

— Megan

Professional Insight

One thing I've learned about rodent problems is that finding the animal is only part of the job.

The bigger question is why it got there.

Around Surprise and the West Valley, garages, rooflines, utility openings, landscaping, and storage areas are some of the first places I check.

Rodents are looking for pretty basic things: food, water, shelter, and a safe place to stay.

As conditions change in October, a garage, attic, or wall void can provide exactly that.

That's why long-term rodent control usually comes down to two things: dealing with the activity that's already there and figuring out what allowed it to happen in the first place.

If you only do one without the other, there's a good chance you'll be dealing with the same problem again.

Closing Thoughts

This job was a good reminder that rodent problems don't always start with a mouse running across the floor.

Sometimes it's a tiny hole in a bag of pet food.

Sometimes it's a few droppings behind a shelf.

Sometimes it's just a noise you keep hearing after everyone goes to bed.

Those small signs are usually worth paying attention to.

If you're around Surprise or the West Valley and you're starting to notice signs of rodents this October, it's better to figure out where they're coming from before they have time to get comfortable inside your home.

Thanks for reading,