Do you know where they're entering the unit? Any chance you have water baseboard heaters with holes in the wall where the pipes go? Cockroaches can live in walls for a long time without food -- like a long, long time.
When this happened to me, I got to the point of filling all of the holes in the apartment. I can't advise that you do that given what's probably in your lease, but if you were to do something like that, Great Stuff expanding foam might be one way to fill holes
kjmdr t1_j092acx wrote
Reply to Boston Housing Authority - cockroaches in apartment by Naive_Ad_6317
Do you know where they're entering the unit? Any chance you have water baseboard heaters with holes in the wall where the pipes go? Cockroaches can live in walls for a long time without food -- like a long, long time.
When this happened to me, I got to the point of filling all of the holes in the apartment. I can't advise that you do that given what's probably in your lease, but if you were to do something like that, Great Stuff expanding foam might be one way to fill holes