A rat can squeeze through a hole the size of a quarter, and a mouse through one the size of a dime. In a typical Plantation home, there are more of those gaps than most owners ever realize — and that’s exactly how rodents get in.
Rodent Entry at a Glance
- Rat clearance: Squeezes through a gap about ½ inch — quarter-sized.
- Mouse clearance: Fits through a hole about ¼ inch — dime-sized.
- Favorite Broward entry: Soffit and roofline gaps via overhanging trees.
- Ground-level entry: Garage door corners, AC line penetrations, gaps under doors.
- The fix that lasts: Exclusion — sealing every gap, not just trapping.
Why South Florida Homes Are So Easy to Get Into
Broward County homes have a lot of features rodents love. Tile and barrel roofs leave natural voids. Soffits and gable vents open into attics. AC condenser lines, plumbing, and electrical conduits all punch holes through exterior walls. Add in our lush landscaping — palms, ficus, and fruit trees that act as ladders to the roof — and you’ve got a home that’s practically pre-drilled with rodent doorways.
Our climate makes it worse. With no winter to thin the population, rats and mice are breeding and looking for shelter all year. So the same gaps get exploited again and again. Understanding where they get in is the first step to keeping them out.
The Most Common Rodent Entry Points
The roofline (the #1 culprit in Broward)
Roof rats, our most common rodent, are climbers. They use trees and walls to reach the roof, then slip in through gaps where the soffit meets the wall, damaged or unscreened vents, loose roof tiles, and openings around the chimney or fascia. Most attic infestations here start at the roofline.
Utility and pipe penetrations
Every place a pipe, wire, or AC line enters the house is a potential gap. Builders rarely seal these tightly, and the openings around plumbing under sinks, dryer vents, and refrigerant lines are classic rodent doors.
Garage doors
The bottom corners of garage doors are a notorious weak spot — the rubber seal almost never closes tightly at the edges, leaving a perfect gap. Once in the garage, rodents work their way into the living space through shared walls and utility openings.
Gaps under and around exterior doors
A worn door sweep or a gap under an exterior door is an open invitation, especially for mice. Weatherstripping that’s degraded in our heat and humidity leaves easy ground-level access.
Foundation cracks and weep holes
Cracks in the foundation, gaps where additions meet the original structure, and unscreened weep holes in block construction all give rodents a way in at ground level.
Broward County tip: Rodents don’t need to chew a brand-new hole — they exploit gaps that are already there, and they can enlarge a small opening with their teeth. The takeaway: a “tiny” gap around an AC line or a slightly open soffit corner is more than enough. If daylight or a pencil fits through, a rodent eventually will too.
Rats vs. Mice: Different Entry Habits
The two rodents we see most in Broward homes get in differently. Roof rats are athletic climbers — they reach the roofline via trees and walls and enter up high, which is why most local infestations are attic problems. Mice are smaller and stay lower; they slip through ground-level gaps under doors, around utility lines, and through foundation cracks, needing an opening only the size of a dime. House mice are also more curious and willing to explore new openings, while rats are warier and tend to reuse established routes. Knowing which you have tells you whether to focus your sealing efforts high or low.
The Hidden Gaps Homeowners Always Miss
Even careful homeowners tend to overlook a handful of entry points during a DIY pass:
- Where the AC refrigerant lines enter the wall — the foam sleeve degrades and leaves a ragged gap.
- Dryer and bathroom exhaust vents with broken or missing flapper covers.
- The gap behind the fascia at the ends of the roofline, hidden from the ground.
- Weep holes in block construction that were never screened.
- Where additions or lanai enclosures meet the original structure, which rarely seal perfectly.
These are exactly the spots a trained inspector checks first — and the ones that let rodents keep coming back when a homeowner seals only the obvious holes.
Seasonal Timing in South Florida
Rodent pressure isn’t perfectly steady. While our warmth lets rodents breed year-round, we see entry attempts climb during the rainy summer months and around hurricane season, when heavy storms flood low-lying harborage and push rats and mice toward dry, sheltered structures. Cooler, drier stretches in winter also nudge them indoors. The practical lesson: sealing your home before storm season — rather than after rodents are already inside — is the smarter play in Broward County.
How to Stop Them — Exclusion Done Right
Trapping removes the rodents already inside, but it does nothing to stop the next ones. The lasting fix is exclusion: methodically finding and sealing every entry point. Here’s the approach that works:
- Inspect the whole envelope. Walk the roofline, soffits, vents, foundation, garage, and every utility penetration to map the gaps.
- Seal with rodent-proof materials. Use steel mesh, sealants, and hardware that rodents can’t gnaw through — not just spray foam, which they chew right out of.
- Screen all vents. Cover gable, soffit, and roof vents with proper rodent screening.
- Cut the landscaping ladders. Trim trees back from the roof, remove dead palm fronds, and clear vines off the walls.
- Tidy up attractants. Pick up fallen fruit, secure pet food and trash, and remove yard clutter that offers harborage.
Finding every gap on a complex Florida roofline is harder than it sounds, which is why professional help pays off. Our rodent control service in Plantation includes a full exclusion inspection, seals the entry points with durable materials, and pairs it with trapping so the rodents inside are removed as the doors are shut.
Shut the Door on Rodents for Good
Exclusion is the only fix that lasts. We find the gaps you can’t and seal them tight.
📞 Call (888) 568-9193Frequently Asked Questions
How small a gap can a rat actually fit through?
A rat can squeeze through an opening about a half-inch — roughly the size of a quarter — and a mouse can fit through a gap about a quarter-inch, the size of a dime. They can also gnaw small openings larger, so even minor gaps matter.
What’s the most common way rodents get into Florida homes?
In Broward County, the roofline is the top entry route. Roof rats climb trees and walls to reach the roof, then enter through soffit gaps, unscreened vents, and loose roof tiles. Utility penetrations and garage doors are close behind.
Can I just use spray foam to seal the gaps?
Spray foam alone isn’t enough — rodents chew right through it. Effective exclusion uses gnaw-resistant materials like steel mesh combined with sealant, and all vents should be properly screened.
If I seal my home, will that get rid of the rodents already inside?
Sealing keeps new rodents out, but you also need trapping to remove the ones already in the home. Done in the right order, exclusion and trapping together clear the current population and prevent re-entry.
Rodents will keep finding the same open gaps until those gaps are sealed — that’s the whole game in our year-round climate. If you want to keep rats and mice out of your home in Plantation, Sunrise, Davie, Lauderhill, Melrose Park, Fort Lauderdale, or central Broward County, the team at Pest Control Plantation can find and seal every entry point. Book a professional rodent exclusion or call (888) 568-9193 today.