Springtails are tiny soil-dwelling organisms commonly used in terrariums to support balance and cleanliness. They feed on decaying organic matter, mold, and excess waste, helping reduce buildup inside closed and humid environments.Springtails are not required for a terrarium to function, but they are often added as a supporting element in long-term setups. Population size adjusts naturally to the available environment. FAQ — Pest Identification & Response How do I tell springtails apart from fungus gnats or soil mites? Springtails are white or grey, move quickly in short hops (they jump by releasing a forked tail), stay close to the soil surface, and pose no harm to plants or people. Fungus gnats are tiny dark-winged flies — you will notice them flying near the glass or gathering around drainage holes. Soil mites are often cream or tan, very small, and move slowly in a circular crawl across the substrate surface. If you see flying insects, that is a gnat, not a springtail. Can springtails eliminate a fungus gnat infestation? Springtails support long-term decomposition and mold control by competing for the organic matter that gnat larvae feed on — but they are not a fast-acting treatment for an established outbreak. If adult gnats are already flying, springtails alone are unlikely to resolve the issue quickly. Think of them as part of a healthy, balanced terrarium environment rather than a pesticide. When should I isolate my terrarium and ask for help? Isolate the terrarium if you notice: a sudden large increase in flying insects despite good conditions; visible damage to plant tissue (yellowing, wilting, or root rot signs); or any unknown organism you cannot identify. Place the terrarium away from other plants and contact us before adding any treatments. Early isolation prevents spread and gives us a chance to advise the right next step for your specific setup.