Horticultural Charcoal, 100% All Natural Hardwood Charcoal, Charcoal for Soil Amendment<br>Keeps terrariums fresh, acts as a filter for your terrariums and also works as a drainage layer.<br>100% Hardwood Charcoal<br>Filter harmful odor and bacteria.<br>Horticulture grade charcoal for use in amending soil, making terrariums, orchid soil creation, increasing the flow of air in the soil, and more.