5 signs your neighbour may be running a grow-op or drug lab:

  1. Frequent visitors at odd hours for short periods of time.
  2. Windows blacked out, curtains always drawn.
  3. Unusual lack of snow on the roof, heavy condensation and frost build-ups on eaves and vents. Localized surges and decreases in electricity.
  4. Chemical or skunk-like odours.
  5. Equipment such as large fans, lights, PVC piping, wiring, plastic plant containers, bags of potting soil brought into home or left outside for garbage pickup.