Is this a veggie garden or flower garden you found them in? Could be Colorado Potato Beetle (a pest) or Lady Bug (nice!). I've only seen both of these eggs on leaves, so, on the mulch I don't know. Try googling images of "orange insect eggs". Maybe you can identify that way.

Hopefully they are ladybug, I think those are orange
but so are potao beetle and others
try googling both of those eggs to start with and see if they are close
jolana