Fleas are found almost everywhere – inside and outside – they are very common. … While fleas are visible to the human eye – they are tiny and can be hard to find. Fleas hide in dog and cat fur which can make it even more difficult to see them. They will crawl deep into the fur and bite your pet to feed on their blood.

How common are fleas in homes?

While there is a type of parasite called a human or house flea (Pulex irritans) which prefers to feed on the blood of the two-legged members of your household, they are quite uncommon in industrialized areas. Cat fleas are responsible for about 75% of home invasions.

Are fleas everywhere outside?

The truth is, most pets become infested with fleas when roaming outside. There is mixed information in terms of whether fleas live in the grass, but most researchers agree that fleas do prefer outdoor areas that are shady, moist, and humid.