Proceedings of the Vertebrate Pest Conference

In recent years, there has been increasing interest in the use of carbon monoxide-generating devices to control burrowing rodents. A pilot study was performed to determine how long a black-tailed prairie dog burrow needed to be fumigated with a BurrowRx® machine to obtain control. This pilot study obtained 92% efficacy with a four-minute injection, 86.7% with a 3:45-minute injection and 90% efficacy with a three-minute injection. Out of 59 burrows, 85% had only a single entrance. Of the nine that had two or more openings, six had only two, one had three openings, and two had five openings. Surface measurements from the treated opening to the furthest connected opening ranged from 10 feet to 43 feet with the average being 23.33 feet. The paper also discusses suggestions for further research and suggestions for practical use of the device.