CO2 Services will be used as a treatment method for prairie dog burrows that are within 100 feet of a structure. The cartridges are activated by lighting the fuse and placing the cartridge into the burrow. It will then release carbon monoxide and carbon dioxide smoke that fills the burrow system. We will seal all burrow systems with a paper wad and soil to keep the smoke inside the burrow, which will quickly euthanize the prairie dog underground. These CO2 cartridges are considered safe to be used around occupied structures.