Professionals have several ways to get rid of these hardy creatures. Once they have done their inspection of the home, checking out every nook and cranny for signs of life, they will then consider which chemicals to use.
These are highly toxic so they do not spray all over the place. Rather, spray down cracks and crevices where these creatures are known to hide. If the infestation is severe, they will also use high- powered vacuum cleaners to clean rugs and carpets. You can get more information about bed bugs at https://www.bedbugbarrier.com.au/.
They could also suggest steam cleaning carpets and furnishings to kill off any eggs or adults mites. Householders can also help in the fight by washing all linens and pillow cases in very hot water. The mattresses can be wrapped in black plastic bags and left out in the sun for a while, not forgetting to turn the whole thing over after some time.
Before the mattresses come back into the house, vacuum them thoroughly, not forgetting the seams in particular, to suck up any critters hiding there.
All surfaces should be washed with hot water and bleach too to make sure that there is no debris hanging around. However, if all else fails, the householder may have to consider spraying the whole house but this will mean some disruption to the household routine for several days later.