The customer contacted our company after discovering a significant presence of cockroaches throughout the home. Upon investigation by a pest control company, it was suggested that the infestation may be related to a plumbing issue, specifically a breach in the drain or vent system allowing pests to enter the home. The pest control professionals recommended that the customer contact a licensed plumbing company to further evaluate the situation. Upon arrival, I met with the customer and conducted a thorough assessment of the property. Based on the customer’s concerns and the findings from the pest control team, I recommended performing a leak search on the home’s sewer and vent lines. This included a full smoke test of the drain system. I provided an estimate for this work, which the customer approved. Smoke Test & Diagnosis: I proceeded with the smoke test to identify any potential breaks or breaches in the drainage system. During the test, smoke was visibly exiting from the wall behin