Recently we have seen some rats in the barn. Not mice, the barn cats take care of these, but real big nasty rats. And the cats don't seem to be bothered by them. Is there any way to get rid of them rats that is risk free for cats?
This is what I have always done. But with barn cats, you will have to carefully figure out where to place them so that the cats never come in contact with them or have any interest in the smell of the bait.You could try the classic spring rat traps. Would just need to find somewhere the cats can't accidentally set them off. Rats usually move along walls and tight spaces anyways.