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12.7. Access to treatment sites may require removing carpets, molding, baseboards, wallpaper, and other major actions.

13. Surrounding Units 13.1. Bed bugs commonly spread from infested areas into new locations by moving from room to room, through pipe runs and wall voids, along electrical wires, and through other connections between rooms.

13.2. In apartments, condominiums, hotels, and other multi-unit buildings, when a unit is discovered to have bed bugs, the surrounding units should be included in the service or inspection area. 13.2.1. One or more of these surrounding units— May have been infested by bed bugs that have traveled from the unit with a confirmed bed bug infestation. May be the originating source of the bed bugs.

13.2.2. Surrounding units include adjacent units beside and directly above and below. 13.2.3. Failure to inspect surrounding units, and to service any surrounding units found to have bed bugs, increases the risk of— Reinfestation of the original unit. The bed bug infestation spreading further through the building.

14. Post-Treatment Evaluation 14.1. Multiple service visits may be required to eliminate bed bug infestations. The reasons include, but are not limited to: 14.1.1. Some bed bug harborage areas may be missed during initial service. 14.1.2. Any eggs not destroyed may hatch and subsequent nymphs may not be controlled by residual material.

14.1.3. Bed bugs may escape treatment inside protected harborages. 14.1.4. 14.1.5.

Insecticide resistance. Insecticides with poor residual effects.

14.2. Success in bed bug service is generally declared when no new evidence of bed bugs can be found and verified.

14.3. Because of the cryptic nature of bed bugs, it is difficult to be 100% sure that all bed bugs and eggs have been eliminated.

14.4. PMPs should base their schedule of follow-up inspections on the treatment process they use. Follow-up services may include: 14.4.1.


Interviewing occupants and staff to see if there has been any recent activity (bites, new bed bug fecal stains on sheets, visual sightings, etc.). Inspection of treated rooms and adjacent areas

14.5. The appearance of new evidence of bed bugs after a series of service visits does not necessarily indicate a service failure: the new bed bugs might be re-introductions from other infested locations.

14.6. Document all actions to demonstrate that the pest management firm has taken reasonable steps to ensure that the bed bugs have been eliminated, and highlight any problems encountered (lack of cooperation, structural problems, conducive conditions that have not been corrected).

15. Health and Safety of Technicians 15.1. Technicians should be trained in recognizing the health and safety concerns associated with inspecting and treating for bed bugs.

15.2. When working in bed bug-infested sites, technicians run the risk of carrying bed bugs in their clothes and equipment to their homes, office, vehicles, or to other sites. To prevent this they should be trained to: 15.2.1. Assume beds and other items are infested and act accordingly.


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