As gardeners we all know that our native worms are crucial for the soil. 
Worms has a critical role in the breakdown of plant matter which they then turn into nutrient rich castings, their movement through the earth creates tunnels aerating the soil which helps water retention and prevents soil compaction, they also act as a natural soil health indicator (if you've no worms something isn't right with your soil!).  So anybody that works with the soil will tell you that the...