So how bad (unhygenic, dangerous) are ****roaches? I remember seeing a TV report that seemed to suggest that the native aussie ****roaches (the big black ones) are actually quite clean, but the european ones (small brown) are not so good.

We seem to have a suddenly huge population of very large black ****roaches in our house. I'm not really scared of them, so they don't bother me that way- I just feel like my house is going to be condemned by the health authorities soon, and I'm concerned about them being unhygenic. Are they?

What do I do about them? I really don't want to use any toxic spray bombs or anything like that- is there any more natural way to deal with them? I try not to leave open food around or crumbs, but it doesn't seem to make any difference.