I've used several of the over the counter bait killers and they seem to work, but another mound will pop up and I don't want to continually be putting it out. We've got chickens and guineas as well and don't know what the baits do to them so I stopped.
I read a while back about using an electric fence charger to kill mounds. I've got an electric fence on 24/7/365 and test it every day. So started plugging my tester in to a mound when I'd feed for a couple of minutes everyday. Only did it for a week. That mound is now empty. Haven't tried it on any others but I guess that 9000 volts for a couple of minutes does something.
