I live in an old farmhouse in the country that is more or less permanently infested with cockroaches. I hate the things. Whenever I see one I spray it. We also provide a home to a cat colony that lives under the house and that we look after. We can't fumigate the house because that would affect the cats. Some are tame, others are not, and it would be an enormous hassle (and traumatic to the cats) to trap them all and remove them for the fumigation. So we don't see that as an option.
The question is what other possibilities, if any, there might be. Is there any cat-friendly way to eliminate, or at least reduce, the damned cockroaches? Any suggestions, even silly ones (for the amusement value) are welcome.