Are moles/voles ruining my yard? I have pictures.?

Kind of hard to tell from the pictures and if they are moles you will see raised sections in your yard where the moles/voles are burrowing. You did not mention chipmunks which dig a hole about the same size as well as the snakes. There is a bomb type thing you put in the holes you see to get rid of the critters and also a powdered product called Snake Ender to deter the snakes. Have tried them both and they work.