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application manual.
◆ Have adequate first-aid equipment, SCBA, and other safety
equipment available
◆ Have all fumigated areas and any adjoining areas that were not
fumigated tested with a gas detector prior to worker re-entry
◆ Contact all necessary local and State authorities (fire, police, etc.)
Chemical Treatments Fumigants • Methyl Bromide • Structure Fumigation
Preparing to Fumigate
2-7-4 Treatment Manual 10/2002-04
PPQ
Preparing to Fumigate
Step 1—Determining Type of Treatment Required
Consider the following factors in selecting a treatment for the
structure:
◆ Type of commodities involved (example—grain, spices, or flour)
◆ Degree of infestation (light, moderate, heavy)
◆ Potential risk of spread from infestation
◆ Nature of the business—business shipping materials that could
spread pest (example—a spice wholesaler or specialty foods
distributor)
◆ Availability of food supply—is food available or is the find
incidental
◆ Type of structure(s) infested
◆ Environmental conditions—warm, humid areas favor
reproduction
In locations where reproduction occurs, or the potential for
reproduction exists (warm temperature, humidity, and available food
supply), seriously consider fumigation. Fumigation is not mandated
every time an infestation is found.
In locations where reproduction is not occurring or the potential for
reproduction does not exist (unfavorable temperature, low humidity,
and no available food supply), consider using alternative treatments.
Make the final determination of which type of treatment to use with
the concurrence of the following:
◆ PPQ line (Officer in Charge and Regional Director)
◆ PPQ staff (Riverdale/Raleigh (CPHST))
◆ Responsible State regulatory official
Options consist of the following:
◆ Complete Property Fumigation and Treatment (Category 1)
◆ Selective Property Fumigation and Treatment (Category 2)
◆ Interior Fumigation (Category 3)
◆ Alternate Treatment (Category 4)
◆ Selective Property Fumigation plus Alternative Treatments
(Category 5)
Chemical Treatments Fumigants • Methyl Bromide • Structure Fumigation
Preparing to Fumigate
10/2002-04 Treatment Manual 2-7-5
PPQ
The following is a detailed description of each of the above options:
Category 1—Complete Property Fumigation and Treatment
Fumigate all structures of similar usage on a single property. Place all
structures under a gastight tarpaulin(s) and fumigate with MB.
Spray the area surrounding the structure(s) within the confines of the
property at least twice with a registered malathion formulation. Make
the last application after covering the structure(s) with the tarpaulin.
Free the surface area of all debris by raking or sweeping all debris
toward the structure, include the debris under the cover.
Depending upon local conditions as determined by the PPQ Officer in
Charge and the responsible State regulatory official, you may
unconditionally release the structure after fumigation or hold the
release until a series of inspections are conducted as outlined in
Category 2.
Category 2—Selective Property Fumigation and Treatment
This treatment is similar to Category 1 except not all structures of
related usage are fumigated and the fumigation is followed by at least
three inspections of the entire property.
Notify the owner of the establishment in writing on the PPQ Form 523
(Emergency Action Notification) of the inspection requirement prior to
fumigating any structures (see Appendix A). To verify success of this
treatment, conduct at least three inspections of the entire property
within 1 year. In the Northeast and other cooler regions, inspections
must extend through two summer seasons when khapra beetles are
active. Allow at least 90 days to elapse between inspections. Make the
last inspection within 30 days of the time the structure is to be
released.
Category 3—Interior Fumigation
Treat all structures on the premises or only those structures known to
be infested. Use interior fumigation when conditions make the use of
complete fumigation impractical. Conduct three inspections of the
property after the fumigation has been completed.
This method of fumigation is less desirable because khapra beetles
may crawl into cracks, crevices, and other openings on both the
interior and exterior of an infested structure. Seal all openings in the
structure with masking tape, putty, polyethylene, or other materials
from the outside of the structure. Make the structure as airtight as
　
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