They kill far more than mice and other small rodents.. and if people can not take propar care of thier pets the do not deserve them.. My wife will not let me kill them but I told her if she can not find away to make them leave on thier own then something is about to be done with them..Here is a pic of a feral cat in my pheasant pen.. They have found ways to get under it and also have chewed holes threw the netting to get at them.. I had 50 pheasants in this pen and now I only have 4 left.. I am ripped about it.. Most of these come from pet owners that can not or will not take care of them.. So they in turn dump them off some place so that they can bread and make even more problems.. I have purchased a live trap today and told the wife find a home for these wild cats or else.. They have to go!