Working on my hands and knees, I have collected close to five pounds of these horrid worms from a couple garden beds. The top-most soil level is like coffee grounds, as is the norm with this problem. Removing these grounds exposes the rhizomes of misc garden plants. My plan is to remove this material (mulch and spent soil) which has worms in it despite my care in picking them out) and replace with a thin layer of fresh soil and top with mulch. My question is: what do I do with this material? Is it safe to go into the landfill? Could this pest spread from there? I'd also be interested in knowing if you think the worms may have created cocoons this early in the season? Thanks in advance for your help.