The only other option is a thermal camera because a rotting mouse will give off a little heat.
How to find a dead rat in your attic.
To find and remove the carcasses you have to literally sniff them out.
There isn t really a high tech way of finding the dead rodent.
If you smell nothing move several feet down the wall and sniff the area.
If the rat is in a ceiling area but there s no attic to crawl into it s the same basic deal.
You should probably need to cut a hole in the wall or to dig up insulation in the attic in order to find and remove a dead rat.
I like enzyme based cleaners but you can use a bleach cleaner if you like.
The best tool you have to locate a dead rat is your sense of smell.
Narrow the odor down to one room of the house.
Use a drill and drywall or keyhole saw to.
Then cut a hole with the drywall saw remove the rotten bugger spray with.
If you think you may have a rat living in your attic then you need to get up there and investigate further.
There is no magic odor detecting tool to find them other than your nose.
You are probably already aware that rats are not the cleanliest of creatures that could be living in your house.
Continue smelling the entire wall before you move to another area.
Stick your nose on the drywall and go back and forth narrowing it down.
The most obvious sign that you have rats in the attic is they will leave rat droppings all over the place.
If you felt that horrible and disgusting smell of a dead rat you will try to find it.
You simply must put your face against a wall and inhale through your nose.
Be sure to remove all maggots and body juices and soiled insulation.
The most likely places where you can find a dead rat are an attic and inside the walls.
In short you have to follow these steps.
Your best option is to enter the attic and sniff sniff sniff around until you find a rat and then bag it and spray the area with an effective cleaner.
Stick your nose right against the ceiling until you hit the unmistakable stench of the final resting place.