s.sameer: I guess you probably did not get the right pest control people. I had my house sprayed by a worker who did the job privately for some extra cash, and all cockroaches were gone forever. A professional pest control company could even rid your house of bed bugs. Or you may take some steps on your own during the holidays to rid the house of bed bugs. Pour boiling water around your bed especially at all the corners, joints etc after putting your mattress and pillows in the sun if you can. Keep reversing both these items from time to time during the day. After the boiling water, follow the process with a concentrated mixture of water and Dettol. The aerosol sprays available in the market for killing cockroaches are effective only for a short period of time. Trust this helps and hope you enjoy your sleep!