Deer and woodchucks have eaten my snaps down to nubs.
Could be you have these two?

I'm surprised your snaps were eaten. Usually, my snaps are the one thing that doesn't get eaten. I would guess its a woodchuck. I am trying to eradicate my woodchuck by several methods: I sprinkle fox urine around and in my beds, and I spray the plants with a product called the Woodchuck solution, which is made in Danbury, CT. Plus, I bought several pinwheels at the dollar store. I read that if you put them in the garden, the movement can scare off critters. Since fox is a predator of woodchucks, the urine supposedly scares them into thinking a fox is nearby. I have a havahart trap that I have been trying to catch her in (no luck so far) Between all of these things, so far, they haven't eaten too much.

Rabbits love snaps!