I can feel the pain, mate. A friend of mine had their house infested (and I really mean it) with roaches. I will try to spare you the details, but believe me, they were everywhere (that includes, freezers, frying pans, in the radio tuner (!), etc). Needless to say, I swore to myself that I will never step in that house. Nowadays, a local pest control company has solved their problem, thankgod.