There's a good and a bad side to using bone and blood meal. Predatory critters often do dig things up driven by the smell of the bone and blood meal. Not many things worse than hiking in to find half your plants wilted because a fox or coyote dug up most of the hole.
The good part is if predatory critters do come into the area, their scent, droppings etc, might help keep rabbits and deer away. Nothing worse than hiking in and finding your plants eaten to the ground by an herbivore. So, it's kind of a double edged sword thing.
Your suggestions offer good alternatives if animals are in the area.