Generally, eradication of a bed bug infestation will take two or more treatments. It is important that inspectors and pest control companies follow up with the client at least two weeks after the initial treatment to determine whether eradication was successful. This allows sufficient time for eggs that were present during the previous spraying to hatch and become vulnerable to the pesticides. Follow-up from a friend, landlord, or non-profit agency is particularly necessary to make sure they have the supports they need. Supports may be needed for people who are experiencing forms of trauma following a bed bug infestation. Ideally, the resident should be kept out of the home until the bed bug eradication has been confirmed by the follow-up visit, to prevent reinfestation by new bed bugs and feeding by any bed bugs that survived the initial eradication effort—as this can lead to the laying of more pesticide-resistant eggs. During the time leading up the follow-up visit, the floors should not be vacuumed as this can remove any residual pesticides.
Housing management should keep a record of infestation locations and dates within a building.
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