A natural food and substrate supplement in a 3oz package.
Organic Worm Castings – Hermit Crab Supplement
Mixed into substrate, worm castings add beneficial microbes and minerals that make the enclosure more biologically active over time.
Sprinkle over food as a nutrient supplement or blend into substrate — one 3oz package covers both uses for several weeks.
The castings work two ways in one container — sprinkled over food they act as a nutrient-dense supplement that hermit crabs will actively forage through, and mixed into the top layer of substrate they introduce beneficial microbes and minerals that make the enclosure more biologically active over time. The earthy smell naturally draws hermit crabs in and encourages the digging and foraging behavior they are built for. At 3 ounces there is enough to treat the substrate of a standard enclosure and continue using it as a food supplement for several weeks before needing a refill.
Hermit crabs in the wild spend their time moving through environments full of decomposing organic matter, fungal activity, and microbial life. The substrate in most home enclosures is sterile by comparison — functional, but missing the biological complexity their bodies are adapted to interact with. Worm castings are one of the most straightforward ways to reintroduce that layer of natural activity without overcomplicating the setup or adding anything artificial.
Mix a small amount into the top layer of substrate or sprinkle directly over food two to three times per week. Store with the lid sealed in a cool dry place between uses. Certified organic with no added chemicals, pesticides, or synthetic nutrients. Suitable for all land hermit crab species at any life stage.