The moles are very active in our back yard this year. I swear I'm going to name the little mountain range out there. It's probably visible from space. A few years ago I tried, in vain, to get rid of the little varmints (you can read about it
here if you're interested). But I've since made my peace with the moles. They're good for the soil (if not for the grass) and they eat grubs and other larvae.

The Great Southwestern Mole Range in part of the back yard. A good source of potting soil.
Oddly enough, I thought that Bertie would help us to reduce the mole population or, at the very least, scare the little devils away. But no. In the nearly two years that Bert has been with us, he's brought us exactly two moles. And he didn't eat either of them.
Last week, during Bert's annual visit to the vet, we learned that cats aren't generally interested in moles. The vet didn't really explain why, and the little internet research I did wasn't particularly illuminating. But the evidence is clear: Bertie's presence has not had an impact on our mole population.
It could be because Bert doesn't spend a lot of time in the back yard. I think he sees the yard as the dog's domain. Callie will chase him out or up a tree if she sees him out there. Bert's wanderings generally take him farther afield. Maybe all the moles in our neighborhood see our yard as a safe haven.
Just my luck.