Are there sewer pits in the building? They can come in on the underside of a
pallet and settle in sewer pits quite easily as well.
Joel Voron Colonial Williamsburg Foundation
Conservation Dept.
Integrated Pest Management
Office 757-220-7080
Cell 757-634-1175
Check first to see if floor drain traps have evaporated and are now
dryif so just fill them with water. This happens when the drains are not
used on a regular basis.
Someone down the line could have been doing work on the sewer lines and
drove them up to your site as well.
Lisa,
Assuming these are American cockroaches, they're likely from the sanitary
drains. Check all floor drains to ensure the traps are hydrated. If you're
lucky, you just need to have those topped off periodically. Then, check other
drains. In some cases, you may need to have the sanitary
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