What’s the difference between fleas on cats and sand fleas?

Do fleas on cats affect the cat and the house? and sand fleas just affect the house?

…It’s been my experience through the years that first, sand fleas can and will infect ones entire home very quickly. They come from the sand around a house or any sand one might also truck in, even a little load for the children to play in, although they originate from beaches, marshes, wetlands, etc . They bite and bite hard and ones ankles can be covered just walking through ones house, especially if you are fair and light skinned. These little guys are much, much smaller in size but bite hard and one will need to have their home fumigated…Cat and dog fleas are much bigger, the moms being even bigger as they lay eggs often, around 500 or more eggs in their life span and the cause of worms and diseases in animals should they eat them from mice or birds, etc. or just cleaning their self. It is imperative to keep ones pets free of fleas always…Cat and dog fleas live on animals, but it is not unheard of for them to bite a human occasionally, especially if they get confused…It is much easier to treat animal fleas then sand fleas/flies/mites that have infested ones home…