Bed Bugs, it should first be noted, are a particular problem. In recent years, they have enjoyed a much more insecticide-free environment due to the more targeted use of cockroach traps. What's more, they are increasingly able to tolerate, or completely resist, the most common insecticides. Nowadays, people also travel more and faster. This spreads resistant Bed Bug populations. They are becoming harder to eliminate, and often require more specialized expertise. Calling on a professional is usually the best solution.
If you still want to solve the problem yourself, you can apply Maheu&Maheu Crawling Insect Killer
to all cracks and crevices where insects can hide. For severe infestations, use a pyrethrin-based insecticide like Maheu&Maheu Flying Insect Killer
on mattresses, and even on sofa covers. The residual effect fades quickly, but be sure to apply it in the morning if you wish to use the mattress that night.