Wash your car with warm water and dishwashing liquid, then dry it with a clean, soft cloth. The warmth will help kill off any remaining fleas, and the soap will disinfect the surface of your car so that no new ones can come in.
Vacuum all areas of your car thoroughly, especially cracks and crevices where fleas might be hiding or laying eggs (like under seats or in between seats). Use an upholstery attachment to vacuum seats, carpets, floors and mats.
Use sticky traps to catch any remaining fleas—they’re available at most pet stores, but if you don’t have one handy you can use double-sided tape instead! Just place them near places where fleas might be hiding (under seats or on window sills), check them daily and dispose of any captured bugs when needed! This is also a good way to see if there are any other infestations around your home (such as roach