You can also look at the animal tracks left in the dust in the attic.
Animal in attic.
These small rodents can fit through tiny entry holes and infest an attic in large numbers.
The roof rat is more common in warm areas and more likely to enter the attic.
By turning on bright lights and a radio you can make your attic an unpleasant environment to encourage raccoons to leave on their own.
It is not easy work and there are many important variables removal of critters in the attic requires very specific special knowledge.
Raccoons can enter your attic through loose shingles and or openings the roof and eaves.
Raccoons are capable of ripping shingles off and chewing holes in buildings.
There are two main species of rats in the us the roof rat and the norway rat.
Animals in attic common wild animals in attic include squirrels mice rats raccoons and bats.
Rats and mice in the attic.
If you have rats the entire building must be sealed first and then all the rats trapped and removed.
Look at photos of raccoon feces or squirrel feces or rat feces or mouse feces or bat feces.
Mice are common in many areas as well.
Roof rats in particular are very common in attics in warmer areas and norway rats in cities.
The most common critter to enter attics in many areas including where i work in florida is the rat.
Check on almost any surface not covered by insulation and there should be a layer of dust with animal tracks.
For example we must consider these factors.
Occasionally we find chipmunks opossums birds and snakes.
Or you can check for muddy footprints.