Kanberra Group presents its 1-oz. size Kanberra Gel. The 100 percent natural gel contains no chemicals or synthetic perfumes and is safe around children and pets, the manufacturer states. Formulated to neutralize pet odors, from litterboxes to wet dogs to pet beds, the gel is activated by simple air movement and dissipates the properties of tea tree oil into a vapor to remove airborne impurities, the company reports. It is available in a variety of sizes packaged in round plastic containers.