I had a small bedbug problem once. I created a perimeter around my room and bed with diatomaceous earth for a few weeks. Since my bed had legs, it was easy, I could just put the legs in bowls with the stuff. I never saw them again.
When we come back from a high risk country/hotel, we use the same treatment around the bed legs as a preventive measure. We also put the stuff in the luggage for a few days before opening them.
The good thing about this stuff is, it's inert, also it's super cheap. It kills them mechanically and it's safe for us humans, unless you snort the whole bottle. That means you can use the powder directly on your mattress if they infested the bed directly.
However, this also mean they won't die immediately, so they can bite you once before dying. Also, you don't find the corpses easily.
When we come back from a high risk country/hotel, we use the same treatment around the bed legs as a preventive measure. We also put the stuff in the luggage for a few days before opening them.
The good thing about this stuff is, it's inert, also it's super cheap. It kills them mechanically and it's safe for us humans, unless you snort the whole bottle. That means you can use the powder directly on your mattress if they infested the bed directly.
However, this also mean they won't die immediately, so they can bite you once before dying. Also, you don't find the corpses easily.