Fumigation works by converting a solid into a lethal gas which is dispersed within an enclosed area and maintained at a prescribed concentration for a specified period to eliminate target pests. In Minnesota, fumigation is commonly used to treat grain infested with pests and to treat soil in potato production.
Fumigation works by converting a solid into a lethal gas which is dispersed within an enclosed area and maintained at a prescribed concentration for a specified period to eliminate target pests. In Minnesota, fumigation is commonly used to treat grain infested with pests and to treat soil in potato production.
Fumigation requires several steps:
- Prepare site and determine dose;
- Complete a Fumigation Management Plan (FMP) if required by product label;
- Application;
- Lockout site;
- Monitor and reapply to maintain lethal concentration if necessary;
- Monitor air temperature which may affect fumigation rate;
- Complete fumigation period;
- Aerate fumigated space;
- Collect and deactivate any unused fumigant;
- Dispose of any non hazardous wastes; and
- Clear area for reentry.
The time recommended on the label is the minimum time necessary to complete the fumigation process. The end time cannot be pre-determined because the process could slow down with conditions. End time can only be determined by monitoring fumigant levels in the container over a period of time.
