There’s no other solution than to treat them the way we did the first time — with DDT.
Bedbug populations are not necessarily increasing but returning to normal pre-DDT levels.
There’s btw no reason not to use DDT. The cancer fear was overblown. Obviously it’s not a substance that should be available over the counter, but there’s no reason why qualified and trained personell shouldn’t be able to use it.
If that is true then the only recourse will be antiparasitic drugs. Ivermectin seems to kill bedbugs but not for very long. Fluralaner seems promising.
It’s very interesting that when we treat animals for parasites we treat the animal itself but for humans we believe that something as nebulous as “treating the space” is actually possible.
When the world is ready to actual solve bedbugs it’ll solve them through a pill you take.