There are two main species of rats in the us the roof rat and the norway rat.
Common attic critters.
They chew their way in and then keep chewing once they get in making a lot of damage along the way.
Most common animals in attic the two most common kinds of animals that will enter your attic are raccoons and squirrels.
The most common critter to enter attics in many areas including where i work in florida is the rat.
Common pests possums and squirrels are rather common in florida attics and can usually be noted by droppings if you have the courage to venture up into the attic to figure out what that sound is.
The roof rat is more common in warm areas and more likely to enter the attic.
Cockroaches will only invade your attic if you leave food in that area behind.
But if one or two of them find their way to the attic expect an entire family or even a generation of cockroaches taking over the space.
This is a good place to start because most of the time that sound is going to be one of these two critters.
Squirrels are the most common critters to invade attics.
Raccoons are similar in habit and often do a fair bit more damage to insulation.
Roof rats aka black rats often build nests in attics.
Common animal entry points.
Squirrels are diurnal they re active during the day.
Rats and mice in the attic.
Insects such as cockroaches spiders mosquitoes and termites.
Tips for removing animals commonly found in your attic.