How big a gap does a rat or mouse need?
University of California Extension guidance says to seal gaps larger than half an inch to keep rats out and gaps larger than a quarter inch to keep mice out. That is California guidance rather than a Georgia rule, so it is a measure a technician uses as a starting point and not a legal standard.
A homeowner who wants to check their own house can look for gaps around pipes, wires and vents with a flashlight from the attic, and can look at the soffit boards from the outside. The gap that matters is the one an animal can get its head through, since the body usually follows. A technician measures each opening rather than guessing from its look, because a gap can narrow in one place and open up in another.
Measuring is one part of the work. The material that closes the gap also has to hold up to the animal chewing at it, which is why a technician chooses the material to fit the opening and the edge it sits against, rather than filling the gap with whatever is nearest.
Why do attics in Snellville get rodent and squirrel calls?
The houses here are mostly subdivision homes on slabs from the 1970s onward, with older crawl-space houses mixed in, and each type has its own roof and attic layout. Where a tree limb reaches a roof, an animal can use the limb as a route, which a technician checks for on each house rather than assuming it is the cause.
The fact sheet for this site describes the housing stock as a mix, not a single pattern. On any house, the joints between the roof, the wall and the vent are where a technician looks first. Older crawl-space houses on piers have a different layout, with more framing and a crawl space below that can connect to the attic through the wall.
Snellville's lots are a mix of open ground and wooded edges, and the creeks and the Yellow River corridor run through the wider area. A house near a wooded edge or a creek corridor can have more animals living close to it than a house on a dry street, and a technician asks about that when planning the work. That is a reason to check, not a finding about any particular house.
Is it a rodent or a squirrel, and does it change the work?
Yes. Rats and mice and squirrels use different routes, leave different signs and need different openings closed, so a technician identifies the animal before choosing a method. UGA Extension lists the house mouse, the Norway rat and the roof rat as the rodents living in Georgia.
Rats and mice are small enough to use gaps that a squirrel cannot use, and they tend to hide by day and move at night. A squirrel is larger and is often more active in daylight, and it can chew through a soffit board or gable vent to reach a nest space. A technician reads the droppings, the chewed edges and the nesting material to tell the two apart, because a plan written for one will leave the route used by the other open.
Where the animal is still inside, the order of work changes. The technician deals with the animal first and only then seals the openings, because closing a route with an animal still in the space can trap it inside the wall or attic.
What moves the price of attic work up or down?
The price depends on how many openings there are, how hard each one is to reach, how large the attic and roof are, whether insulation has to be moved or replaced, and whether the work covers one house or several units. The price is explained and approved before work starts, and no figure is given on this page.
Access is one of the biggest factors. An attic with a standard hatch and a clear floor takes less time to inspect and close than an attic with a tight hatch, low joists, stored boxes or a finished ceiling that has to be opened. A roof with steep pitch or high eaves takes more setup time than a single-storey roof, because the work has to be done safely from the right position.
The number of openings and the condition of the materials matter as much as the size of the house. A house with a few well-placed openings is a different job from one with openings at every penetration and a soffit that has been chewed in several places. The technician walks the house and explains the price on site, in writing, before any work starts, so the homeowner sees what is being priced before agreeing to it.
Can a homeowner do attic exclusion alone?
A homeowner can look for openings and clear the attic floor, but sealing and the handling of any animal inside are better left to a technician. The attic is a confined space with insulation, wiring and framing, and an animal inside can behave unpredictably when it is disturbed.
Homeowner policies can matter here too. The fact sheet notes that termite and vermin damage is usually excluded outright from a homeowner's policy, and that the policy and the insurer decide what is covered. A homeowner who has a rodent problem and a claim question should read the policy and talk to the insurer rather than assume a result, and a technician can describe the work done but cannot decide the coverage.