Anyone here have knowledge on killing roaches? I live on the second floor of a small two story apartment. I keep my home pretty clean, of course there are times a few breadcrumbs may be left in the kitchen but it is impossible to be perfectly clean. I have had a roach problem for the past 3-4 months now, the middle size smaller roaches, not the huge ones. We have a exterminator that comes once a month but his spray do not seem to work at all. He keeps blaming me indirectly for not keeping the place clean enough even though he has never seen my place dirty once. Just a couple days ago, I found out that the other 2 neighbors next to me have the same issue and when I talked about them to the exterminator and the landlord together, they denied!!! but when I said I spoke to them clearly, they flipped the story and BLAMED THEM TOO for eating pizza and leaving crumbs. Now my question is..... no matter how dirty someones house is... isnt the stuff they spray supposed to kill these roaches?? even if for a couple days only?... because this stuff he uses does not make a tick of difference. I have never found a single roach dead other than the ones I kill myself. I mean, what is the point of the freaking spray if it doesnt make any difference? The exterminator keeps telling me this is the strongest spray in the market.