Newark, Ohio
The smell is there and nothing is
You know what you are smelling. You have looked in the obvious places, moved furniture, checked the basement, and there is nothing to point at. The search is the job here, and it is the reason this call exists at all.
A municipal crew collects an animal you can show them, which is the arrangement carcass removal in Newark sets out in full. An odor with no body attached to it gives them nothing to collect and gives you nothing to report, which is where the paid version of this starts.
Or send the details and get a callback.
What actually narrows it down
Smell alone is a poor direction-finder, because air moves through a house along paths that have nothing to do with where the animal is. What narrows it down is everything around the smell.
Flies. A cluster of blowflies at a window, a vent, a light fixture or a ceiling seam usually sits close to the body. They developed on the carcass and head for light once they can fly, which is why a cluster hands you a cavity where a smell only hands you a room.
What you heard beforehand. Scratching in a ceiling three weeks ago that stopped, then a smell. That sequence locates the room more often than the smell does.
Where it is strongest at different times. A smell that comes on when the heating runs points at a duct run or a void the warm air is moving through. One that is worst on a still, warm afternoon points somewhere else.
Recent work. A vent capped, a soffit repaired, a chimney topped, a crawl space hatch screwed shut. Animals get closed in, and the timing usually lines up.
Before you spend money on air
Ozone generators, foggers, sealed bags of charcoal and pump sprays all treat the smell, not the animal. While a carcass is still decomposing the smell comes back, because the source is still producing it.
Odor treatment has a place, and that place is after the source is out or, where it is sealed in a finished wall, after decomposition has run its course.
Getting it out early shortens the tail
Two to four weeks is the usual fade once the source is out; those are field patterns, not laboratory figures. The length of that tail is set by how much material the carcass soaked before anyone got to it, which is the real argument for tracing it now, where it can be reached, rather than waiting to see whether it passes.
When the smell is not an animal
Worth ruling out before you pay anybody. A dry trap in a floor drain or an unused bathroom produces a sewer smell people regularly read as something dead. So does a failed sump seal. Run water into every drain in the house and give it a day.
A search can end with no carcass found. That is a real outcome, and you should be told it on the day rather than booked in for another look.
Where the trail usually ends
Most of the time, inside the structure, which makes it a recovery job wherever a person can get to it without cutting a finished wall or ceiling, and a conversation about the smell and the next practical step where nobody can. Sometimes it ends in the yard or against a foundation, and turns into an ordinary pickup. Occasionally it is a deer in the treeline that nobody had seen, which is a different job again.
What the search costs
Searching is priced differently from lifting something into a truck, because the time it takes is not knowable in advance. The cost page explains what moves the figure, and you get the number before anyone starts.