Bio Gel is a biological oil stain remover gel for removing oil contamination from gravel, stones, and soil. It contains oil-digesting bacteria and enzymes in a moisture-retaining gel, providing the bacteria with oil, moisture, and warmth needed for bioremediation. The gel is applied to the contaminated area, kept moist, and allowed to work for up to 30 days to fully degrade the oil through the bacteria's natural processes. It is a hazard-free and environmentally-friendly alternative to excavating contaminated materials.