I put a few alfalfa pellets in my potted daylilies with the intention of coming back later to water and work them in. Before I could get back to that project it rained for a couple of afternoons. I went back to work the pellets in and found several small brown worms in the pots. They seem to be eating the pellets. Were they in the pellets all along and is is okay to leave them there. I heard that worms were good for the soil.