The law and you, to get around the law of have in warrent is easly by passed . When they do get a warrent they use a wide angle cameras for a free look. Venting under a spa or a heating vent is a way around it. Next is to use insulation with a breating layer . This stops build up of heat that acculiulates (buildups SP ) around you room/s . You can buy Ir film at a good photo store and look at your house/trailer/grow room/ under ground system. Note the x and + on the roads are indexing points for the ir camers of the building departments. The go up so high and to take pictures and can find bootleged houses and additions real easly.
If you want to see how easy it is go to google earth and look at your house. That is the visible and the Ir is someplace else.
Also note a 100 watt bulb can be seen from space with the right lens on the spy cameras. Hells fuzzy you can see one from 35,000 feet in a plane.
95% of the bust are from loose lips,, usualy the growers. ????
The U.S. and the Russians can read sub headlines of a news paper from space.
The fun one thats the troops use is the spy ones to look at woman naked in there backyards.