The rat poison worked very well for me. They are not just insectivores, they are more like scavengers.
Moles apparently have a great sense of smell, so the guy at my local hardware said to get a stick that was wider than the poison pellet. Poke a hole in the mole trail with the stick. Drop in a rat pellet WITHOUT TOUCHING IT. Use the bag to squeeze one out. Because of this, there is no scary human smell associated with the very yummy rat poison.
The moles will get it, and take it back to Mole Central, where they will all feast on it.
A HUMOROUS STORY:
I used to live in a neighborhood, and my across the street neighbors would come out and watch me do yard work or garage work. When I had to mow the lawn, they'd sit on their porch and watch. When I got done, they'd go inside. When I raked leaves, they'd brew some coffee, watch, then go back inside.
They'd never wave, never say Hi when I did, and would avoid eye contact when I actually looked up at them. This went on for 2 years.
One day I was walking about the yard, about to mow. I saw a mole trail and frowned. The Milky Spores wasn't working (it killed a primary food source of the moles). THe neighbors, sure enough, had just come out and were happily watching me. I decided it was time to give them a show.
Going inside, I dressed in my aikido dogi, put on my hakama, and got my replica Highlander katana.
I strode out into the yard purposefully, immediately drawing the attention of the very observant neighbors. Going to where the mole was moving, I noticed it stopped and strode to that place.
Giving a very loud, maniacal kiai, I buried the sword into the mole trail, and pulled up in a strong hikite.
The tip of the sword was bloodied.
I immediately checked my feet, assuming I had stabbed a foot and I would see loose toes laying amongst the grass blades. All toes were accounted for. I had killed the mole! After a purposeful chiburi and nouto, I went inside and got dressed to mow.
I also solved the problem of my very observent neighbors. After that incident, they no longer came out for the sole purpose of watching me do yard work.
Satsujin ken for the mole
Katsujin ken for me.