Dealing with a Cat Flea Problem Fleas are brown wingless insects of a few millimeters, which can weave through the hair of dogs and cats and jump up to thirty times their length. They live most of the time, hidden in the coats of our companions, and feed on their blood. After digesting the blood, fleas leave small blackish, comma-shaped droppings in the coat. The observation of these black grains is characteristic of the presence of fleas on your animal.
Just because you don’t see fleas in your companion’s hair doesn’t mean they don’t have any! Be careful !
A flea lays up to 100 eggs per day for 3 weeks. The eggs and the larvae of fleas can resist up to 6 months in the nooks of the house! Fleas are a real plague, and their presence on your companions is a health problem. This is in no way due to a lack of hygiene.
Where can my cat catch fleas?
Fleas multiply very quickly. A single flea brought home by your cat while walking outside causes a real infestation of the habitat and the animal. Fleas hide and lay preferentially in tissues: baskets, cushions, sofas, beds … and these places are where your cat prefers to rest! The eggs and larvae then give new, more numerous fleas. Hence the surprise to see fleas reappear when we thought we had got rid of them.
Outdoors, your cat can catch fleas mainly from another cat or dog.
Wild animals are also very often vectors of fleas. In particular the hedgehogs (who, alas for them, cannot scratch to get rid of them!).
Even if your cat does not go out, it is not safe. Fleas can come from outside. They can move around and pass under your front door, come to your balcony, be brought in by flea-infested pets. In addition, there may be flea eggs in your home which will then give adult fleas.
source:how to get rid of fleas