Alas, my dog considers plastic knives chew toys and found every one I installed last year. I still find shards buried in the flower beds.

Does your dog chew and dig up your plants, too?

I have 2 dogs. I did have to holler at the younger one, but once she realized I wasn't kidding around ... she now stays out of my garden (most of the time). And I do know that she does NOT like stepping on the handles. She has never pulled any up. My hybridizing seedling beds have a lot of knives in them (obviously) and it is like a mine field for even the squirrels! None of them like trying to maneuver through all those handles sticking out of the ground.