Having successfully dealt with an apparently serious pest infestation over the last week, I have no idea how someone lives in such a manner that they have these problems persist in an area fully under their control.
I had three different colonies of ants come in to my apartment - I laid DE down in my apartment, sealed up the ant's entryway into my apartment with cardboard and - presto, no more ants.
I had roaches come in from the apartment next door - I solved the problem in the same way. No more roaches.