Simple logic would suggest that house cats are immune from fleas, as long as they are strictly indoors and never step outside. There’s nothing wrong with this theory, except that it’s completely wrong. Unfortunately, even house cats are susceptible to fleas (and the other risks of being outdoors,) the only difference being there is a little more you can do about it. Here are a few of the things to help explain why:
How are cat fleas different?To understand what the fleas are capable of, it’s first important to understand why they are different to other kinds of fleas. Firstly, they have massive jumping capabilities. They can cover up to seven inches vertically and thirteen horizontally, that would be the equivalent of 250 feet up and 450 feet across for humans – a pretty long way. Indoors they tend to live and hatch in carpets, floor cracks and in the creases of furniture. While they need to eat (you/your cat) to breed and lay eggs, they can survive in a dormant state for any time up to a year.
How do they get inside?Excluding the instance of your indoor cat making its way outside, in which case the cause is obvious, the cause comes from the fleas’ ability to jump those huge distances. Outdoors they tend to live in muddy and sandy areas, as well as long grass, so fleas can jump on to humans or other animal residents in your house. They can also get in via windows. If you regularly leave your window open, fleas can jump onto your cat either from another cat coming up to the window or by long grass near the window giving them a close enough area to jump from.
Highrise condo cats are still susceptible. Let's say your neighbors have cats or dogs that regularly go outside. Fleas travel! If you feed or manage a colony of community cats, then you are a carrier for fleas. Outdoor neighborhood cats carry many fleas and those pesky fleas will jump onto your clothes and food bags and thus get inside your home.