Beneficial Notes
for Cat Flea
No university or government source credits the cat flea with any beneficial or ecological role. It is a blood-feeding parasite of mammals with no documented benefit to people, pets, or the environment, so there is no case for tolerating it indoors. Source: https://ask.ifas.ufl.edu/publication/IN137 Source: https://texasinsects.tamu.edu/cat-flea/