@carolen we legalized cannabis 10 years ago in my state. Every once in a while the cops will find an illegal grow like this, and thw holes can be repaired, but the biggest problem is mold. Interior walls are not designed for high levels of moisture. And inevitably these houses are rented, and the mold gets into the walls. The cops arrest the slave labor (likely Chinese) but the renter is nowhere to be found and the damage is in the tens of thousands!