How to prevent a new infestation once you have gotten rid of the infestation you need to prevent it from happening again.
Dead mouse in drop ceiling.
If a dead mouse carcass is inside a wall or drop ceiling or any other inaccessible cavity the best method is to move back and forth with your nose against the wall or ceiling sniffing and sniffing.
If you re too squeamish to undo a snap trap to release the dead mouse you can.
Set traps inside a void between ceiling.
To remove the dead mouse you will need first to locate it which can be done with a borescope or a small camera.
Follow the trail of mouse droppings.
They re spring loaded and could.
Set traps inside any drop ceilings and at points like plumbing and heating penetrations where mice can exit the ceiling in the same way as in step 2.
How to get rid of mice in your drop ceiling step 1.
Once found cut the drywall remove the mouse and then patch the drywall.
Take caution when setting the traps.
Locate both the nest and the source of entry into the home.
It s a bit of work but once you come directly on top of the spot with a dead rodent you will know it the smell changes.