What the noise is telling you before anyone climbs a ladder
You can narrow this down from your living room. Timing is the first clue. Heavy movement in daylight, loudest in the hour after sunrise, points to a gray or fox squirrel, which works on a daytime schedule. Activity that starts after full dark and continues in bursts all night points at flying squirrels. Weight is the second clue. A gray squirrel sounds like something rolling a walnut across the ceiling. Flying squirrels are lighter and quicker, with a soft landing thump that people mistake for mice, and Penn State Extension notes they nest in groups rather than alone. Location is the third. Noise that stays in one area near an eave suggests a nest. Noise that travels the length of the house is an animal using the attic as a corridor. Write all three down before you call anyone. In an Omaha winter, a company that hears daylight activity over a bedroom will plan a different job than one told about scratching at two in the morning, and getting that right the first time saves a visit.
Why sealing is the whole job, not the last step
Here is the thing most people learn the expensive way. The squirrel is replaceable, the hole is not. Take the animal out, leave the opening, and the space you just cleared is now vacant, warm, and advertised to every squirrel in the neighborhood. Good exclusion work is carpentry with wildlife knowledge attached. Every opening on the building gets found, listed, and covered with half inch hardware cloth or metal flashing screwed into sound wood. Soft fascia gets cut out and replaced before anything goes over it, because screwing metal to rotten wood only hides the failure. The usual weak points on Omaha houses are consistent: the fascia corner where a gutter ends, the gable louver, the ridge line, and the gap where a garage or porch roof ties into the wall. Any one of them left open undoes the rest. When you take a bid, ask for the opening count and the material list. A company that gives you both is selling the repair. One that only talks about traps is selling a visit.
The Omaha calendar, month by month
October is the month to work on the outside of your house. Animals start looking for winter quarters as nights drop, and every gap you close before the first hard freeze is one you never have to argue about in January. November through February is peak entry season in a place that averages 14F lows. This is when most attic calls happen, and when a small opening turns into an established nest. Late winter is the first litter window. Penn State Extension places gray squirrel breeding around early January, so by February and March there may be young overhead, and the noise changes to a heavier shuffle that stays in one spot. Sealing blind during that stretch is the mistake to avoid. Spring is repair season. Roofs are workable, animals are back outside, and you can do the metal work in daylight. Summer brings the second litter and, with it, the same caution. Then fall caching starts, chewing steps up as animals stash food, and the cycle points back at October.
Reading two quotes side by side
Squirrel bids in the same neighborhood can differ by a factor of three, and the reason is almost always scope. Ask four questions and the gap explains itself. How many openings did you find, and where are they. A company that cannot answer has not surveyed the house, only looked at the obvious hole. What goes over each one. Half inch hardware cloth or metal, screwed down, is what you want to hear. Foam, caulk, and plastic screening are temporary and everyone in the trade knows it. Who does the wood work. Some outfits handle the animal and hand you a repair list, which is a legitimate business model but is not the same purchase as a company that includes carpentry. Is the cleanup in or out. Insulation removal and replacement frequently costs more than the removal itself, especially in a cold climate house where depth matters. With those four answers written down, the cheaper Omaha bid often turns out to be a partial job rather than a bargain.
Renting, owning, and who pays for the repair
A chewed opening in a roof edge is a defect in the building, so in most rental situations the fix belongs to the owner. Tenants do not own fascia, and a house animals can walk into is not fully weather tight, which matters in a city that spends months below freezing. If you rent, create a record on day one. Message the landlord in writing, name the room the noise is over, note the hour it happens and how long it lasts, and photograph anything visible from the ground. Dated messages move slow landlords in a way phone calls never do. Tenants can weaken their own case, though. A feeder on the balcony, pet food left out, birdseed stored in a paper bag in the garage, and months of unmentioned scratching all become the other side's argument. Owners come out ahead by acting early. Screening vents and trimming limbs is cheap compared to replacing insulation across an Omaha attic. Ask the contractor for an invoice naming each opening found and each repair made, and file it, because this question returns with the next tenant.