I honestly never knew of anyone who got caught with a percy grow through helicopter intel(still made everyone paranoid though) and I live in a built up area with the thing up all the time and whether they have stopped looking in this way I don't know but with the effort it's easy to create an environment in the attic shielded from outside and is probably best practice anyway as then you control the environment feeding into any tent or whatever used.
Room based is a case of extracting to outside the room to stop recirculating and reheating the air but for instance a 600w light in a room would not raise any alarms and the radiator will probably give off more heat for instance.
Year of the indoor tomatoes

