Hygiene and environmental cleaning product based on the continuous release of chlorine dioxide with dissociation elements via a slow evaporation gel. It eliminates odours and is very effective at bactericidal, virucidal and fungicidal levels. It is presented in the form of soluble powder and with an empty bottle for dissolution. Once the mixture is made with water, it is left for 24 hours and from that moment on the gel is already active. This gel emits the gas that easily reaches all corners of the greenhouse, preventing the appearance of fungi in the plants. A bottle with the corresponding sachet is used to treat rooms of up to 20 cubic metres or greenhouses of up to 12 square metres. After 30 days of gas exposure, the gel’s initial dark yellow color changes to light yellow and finally becomes a bright solution that has lost its chlorine dioxide release capacity. Use one Envisol Air every 30 days.