Vacuuming sucks fleas from carpeting, cracks in wood floors, under furniture, and curtains and upholstered furniture. Vacuum where your pet sleeps and eats. Empty the vacuum cleaner bin or throw away bags outside right away so fleas can’t return.
Vacuum every day where you and your pets hang out the most; once a week for everywhere else.
For a serious flea problem, steam-clean your carpets. And for very bad cases, call an exterminator. Just make sure what you do is safe for you and your pets.