Voles are hard to stop, once they are chomping on your root vegetables.
The first year I planted potatoes, back when Yukon Gold were hard to get, I was digging up my crop and I had the same thing happen. I’d see a GORGEOUS, HUGE potato - and the underside would be GONE! So frustrating!
The best ways to prevent this in the future are listed in the link below. When I plant potatoes in raised beds, there seems to be less of a vole problem.
https://bonnieplants.com/gardening/keeping-voles-out-of-the-garden/
The cats and the two house dogs have been patrolling for Chipmunks; they just LOVE to dig up my freshly planted things. Jerks!
This essentially is a poison bate tower that auto feeds the anticoagulat poison cakes.
Dogs and cats cannot get in it ..only mice rats and voles. They eat the poison and after each cake is nibbled away a new one drops down...auto feed....I have not yet tried it but that is my plan.
I’ve got moles I need to do something with. There’s tunnels all over the place. They pushed a bunch of my onions out. Over winter they pushed a bunch of naked lily bulbs out. They say a physical barrier needs to be 2 foot in the ground so I need to kill them. I read the instructions on some poison and it said to push down a tunnel and see if it pops back up the next day. That lets you know they’re still using that tunnel. Then you open up a little hole and drop the poison in the tunnel. Wish I had a lawn roller. I could flatten them all down. There’s a lot of them. So many that I keep the mower adjusted high so I’m not mowing dirt.