Dumpster mess.
When there are outside attractants, which are often neglected or overlooked, pests will often find their way inside. Here, there were numerous structural issues and blatant sanitization problems that needed to be addressed and corrected immediately.
The exterior of this facility had numerous problems, not the least of which was the dumpster area, which was a mess by any standard. The rear parking area was covered with garbage. Dumpster areas need to be kept clean with lids that securely close and no garbage on the ground. Periodically, they should be power washed to clean out the built-up residue. Unkept dumpsters are major attractants for rodents, flies, and other insects. With the outside garbage and easy entry points into the building, it was no surprise to me that there was a rodent issue.