STRINGS.SUBWORLDS.REGOLITH.UTILITY
Lingering within the layers of Regolith are the pernicious Shove Voles which eat valuable resources and excrete them at half the original mass.
Fortunately these pests can be wrangled up and used as a good food source for my Duplicants. However, extra care must be taken to contain these critters in pens made from either double thick walls or from Refined Metal since they are capable of burrowing through most other materials.