I have used the solar spikes for gophers before. To my surprise they seem to work, neighbors have gophers, I don't.
I live in Louisville Kentucky. I built my home in May 2016. Every morning I was dealing with new mole tunnels. Became a daily ritual of stomping them all back down. Out of desperation I was willing to try anything. I went to the internet and began searching. I came across these spikes. For $26.9 it was worth trying in my opinion. They arrived within a day. I layer them in the sun for a day before installing them. They have been in he ground for about two weeks. I have not had any new tunnels since installing the spikes. Seems to be working.