It is not unusual to find the following:

• Growers will unload unfamiliar equipment and very little household furnishings
• Growers will bring in copper and/or PVC pipe, soil, halogen lamps, large amounts of black plastic aluminum ducting, fans and ballasts
• Tenants may come and go at unusual hours but never seem to stay overnight (some move in for a short period to take care of other crops in the neighbourhood)
• There is little or no garbage pick-up each week
• Except for some junk mail, the mailman rarely goes to the house
• Windows are often blacked out or heavily draped
• There is a strong odour similar to skunk cabbage (This is the smell of bulk marijuana)
• Tenants may illegally bypass the electrical system or the power meter will spin at a very high speed
• There is often heavy condensation on the inside of the windows
• Frequently, the humming sound of fans can be heard