Some Bed Bugs strains have become resistant to pyrethroid insecticides like Tempo and Delta Dust. If you suspect a resistancy issue then a pyrethroid based insecticide would not be recommended.
CimeXa Insecticide Dust is the newest product available in the battle against bed bugs. CimeXa Dust is 100% Silica dust (pyrethroid free), is very safe, odorless, and will not stain. CimeXa Dust will last up to 10 years when applied to undisturbed areas like wall voids, or frames of some furniture such as couches. It is very effective on bed bugs, especially pyrethroid resistant bed bugs. When pests come into contact with CimeXa, the product clings to their exoskeleton and absorbs the waxy coating, causing death from dehydration. You would want to reat the interior framework, cracks and joints of the furniture, and the folds, tufts and edges of cushions and other upholstered areas.