I am desperate for help. This is my second year in this home, which my parents purchased so it's not technically my property, and I've had extensive vole damage to my gardens. My sister lived here prior, though she never did any yard work so it's hard to tell if the voles have been here all along or came when they noticed all the beautiful flowers to eat. Last year, they attacked my lilies. But here's the weird part. They would eat the leaves at the bottom of the plant first. Then they would knock the stalk over and take the flower either to their holes and leave them at the opening of the hole or they would just simply leave the flower there. Now they're doing it to my dahlias, because I put cylinder hardware mesh around the lilies last year and left them there all winter so they would be protected early in the season. I tried everything to deter them. Castor oil pellets, that stinky urine/dried blood/rotten eggs, hardware mesh buried into an L shape around the deck so they can't live there, small gravel around plants and deck, perlite (which I read about online that they don't like to dig thru it but they still do), I even tried mouse traps (I caught about three, and I went out to clear the traps and found one still alive in the trap and decided I couldn't do it anymore - even though they are killing my garden, I love animals too much). I can't use poisons because I have a dog, there are some stray cats around who seem to occasionally help with the vole problem but mostly seem to kill rabbits (though there's never much evidence of it other than clumps of fur left behind). I also occasionally see an opossum. So my question is, is my only option to put those cylinder hardware mesh cages around all my plants? It looks horrible, but so does having a bare garden or having half a plant left. Would I be better off putting the hardware mesh like a fence around each garden? I have 6 gardens, two of which are incredibly large. My dad was against the idea of the hardware mesh around all gardens because of how it looks (I agree but when you've spent thousands of dollars and countless hours on landscaping, I'd like to protect my investment) but I was thinking of putting the hardware mesh around and then possibly using those little decorative garden fences to make it look a little more presentable. I think these are meadow voles and not the pine voles, though these voles do tunnel but haven't seemed to eat any root systems. Sorry this is so long and I appreciate any feedback. Thank you

I've attached a picture of the most recent damage as well as the little bugger caught in the act from last year