How do exterminators rid your home of fleas? hellllp!

hellllp!
How do I attain self of fruit flies?...
Answers:    They spray. You clean up, and they spray again 2 weeks to a month next. And they put crystals down in your courtyard each time. No more fleas. No more roaches. Unless you contract near one of those places that come by every month. They have to, because they never own time to do the job right surrounded by the first place.