Look for holes or gaps in the entire house.
Dead rat attic flies.
If you think you may have a rat living in your attic then you need to get up there and investigate further.
Then you have to trap and kill the rats that remain in your attic.
The smell will only get worse and more pests like flies and maggots will be attracted.
If you have confirmed that there are rats in the attic follow the following steps.
You may even find that some are still alive but moving slowly.
I live in a fourplex and the next door neighbors who i share walls with have been dealing with a rat infestation for the past few months.
You have to put a halt to rodent entry to be able to make a permanent solution to your problem.
The most obvious sign that you have rats in the attic is they will leave rat droppings all over the place.
Know the most common areas.
If you don t want to deal with this stuff yourself by all means hire a professional to come exterminate and solve your problem.
To get rid of attic flies once they re dead simply vacuum them up.
You are probably already aware that rats are not the cleanliest of creatures that could be living in your house.
You have to seal your attic first for any rat control program to work.
Any hole or crack more than about inch 18 mm wide will just allow more rats to come in.
Dead rodent in reachable space like the attic or basement is more straightforward to remove and clean.
Seal all the entry holes or gaps.
Get rid of them too.
When a rat squirrel bird or other animal dies it doesn t take long for a blow fly or house fly to zero in on the carcass where she proceeds to lay eggs.
Assuming garbage management is not a problem the next best guess is an animal carcass somewhere in your wall voids attic or some other unfrequented or inaccessible part of your home.
I ve emailed her but haven t heard back yet and am not sure what steps i need to take if i suspect a dead rat is in my walls.
For inaccessible areas like inside the wall in the floor or in the ceiling you might need more effort to figure out how to get access to the carcass.
Most of the time help from professionals might be required to get the job done.