Cockroach invasion .

I think everyone has the same problem, we found pouring bleach down the drains once a week seems to help.

i had the same problem .I plugged every hole, use the white powder every were i could think off . use spray and so on. Last year i came iate and in the kitchen i saw a huge cockroach. i managed to kill the pest and the next day i was thinking the only place left is the extractor fan. I don't do much cooking so i blocked the intake from the roof pipe and since then i haven't see one inside.