My dad got bedbugs in his studio apartment. The landlord treated them several times with some other company. They kept coming back. Then the landlord was going to kick my dad out blaming him for the infestation.
One treatment form Naturezone and a little education wiped them out. When my dad moved to another apartment while packing his stuff up we found dead bedbugs everywhere, BUT not a single live one.
My dad has been in his new apartment for 3 months and still has no bedbugs.