Not everyone can afford the professional treatment and even if you have them come in, who's to say they wouldn't miss a bug or two, or some of the eggs.
Yup!! Govt did away with DDT years ago, cause it worked so good. DDT did away with mosqsuitoes, and Malaria in Africa too. Another reason the our govt ban the use of it.
Now it is light bulbs, They want us to buy those twisted lil bulb that burn out faster than you can bring them home.
And they are very expensieve. they closed the last factory that made the old light bulbs last week.
Did away with lots of much needed jobs.
Sorry ole world we live in anymore.