Jacksonville has been enjoying highs near 80 this week, but that’s about to change. Action News Jax is forecasting a strong cold front on Thursday, with the coolest air of the season following it. Highs next weekend should be in the low 60s, with lows in the 40s along the coast and the 30s inland.
We’re not saying the front will bring mice or rats with it. But UF/IFAS Extension notes that rats and mice seek food and refuge indoors during the winter months. The first real cold snap is a smart time to find the gaps before something else does.
What rodents need from your house
They want food, water, shelter and warmth. Your attic, garage, pantry and wall voids can offer all four. A mouse can squeeze through an opening about 1/4 inch wide, and a rat needs about 1/2 inch, according to UF/IFAS. That’s roughly a dime for the mouse, and a gap you’d never think to worry about.
In Jacksonville, we see two kinds of problems most often. Roof rats climb. They use tree limbs, vines, palms and power lines to reach the roofline and get into attics. House mice tend to move indoors more when the weather cools, and they like garages, kitchens and wall voids.
Do a walk around this week
You’ve got a few warm days before the front arrives, and that’s a good window to look things over. Walk the outside of the house and check:
- Gaps around pipes, cables and utility lines where they enter the house.
- Vents, eaves and roofline gaps, including spots where a damaged screen or loose trim has opened up.
- The gap under garage and exterior doors.
- Tree limbs and vines that touch or hang over the roof.
- Firewood, boxes and clutter stacked against the house or the garage wall.
UF/IFAS recommends sealing openings with rodent-proof materials like hardware cloth, steel mesh, sheet metal or mortar. If you spot a gap high on the roofline, get help with the ladder work instead of risking a fall.
Take away their food and water
Store pet food and birdseed in containers with tight lids, and don’t leave pet bowls out overnight. Keep garbage in covered cans. Fix dripping faucets and leaky pipes in the garage or under sinks, since water is as important to them as food.
Signs they’re already inside
Don’t wait for a sighting. Rodents are secretive, and most people notice the evidence first:
- Scratching or scurrying in the attic or walls at night.
- Small dark droppings in the garage, pantry or under sinks.
- Chewed food packaging, insulation or wiring.
- Dark grease marks along beams, pipes and walls where they travel.
Where DIY runs out
Sealing a gap or setting a trap can help when you’ve caught a problem early. It gets harder when there’s more than one entry point, activity in the attic, or droppings showing up in more than one place. Closing one hole while the rodents are still inside can also leave them trapped with your insulation and wiring, so it helps to know what’s going on first.
Please be careful with rodent bait on your own. Bait has to be placed where kids, pets and wildlife can’t get to it, and the label has to match the rodent you’re dealing with. UF/IFAS suggests using poison bait only as a last resort, after other methods.
How we handle rodent problems
Our rodent control starts with an inspection. We look for droppings, rub marks, gnaw marks, nesting and runways, and we figure out which gaps and openings the rodents are using. We place tamper-resistant bait stations around the outside of the home. When rodents are already inside, we set traps in the attic, garage or other active areas and check them on follow-up visits. You get a clear entry-point report listing where they’re getting in, like roofline gaps, vents, utility lines and door gaps, so those spots can be sealed.
Many homeowners add rodent stations to our quarterly pest control plan so everything is checked on the same visit.
If you’re hearing noises or finding droppings, or you just want a professional to look at the roofline before the cold sets in, contact us and we’ll talk through what’s going on at your Jacksonville home.
Sources
- Action News Jax, First Alert Weather, November 9, 2026
- National Weather Service Jacksonville forecast discussion, November 9, 2026
- UF/IFAS Extension, Controlling Rats and Mice
- UF/IFAS Extension, Rodent management options in and around the home
- Photo: House mouse by Ahunt, Wikimedia Commons, CC0. Stock image, not from a Jacksonville home.
