Proper management will not be like that. Authorities will collapse if they will have to wait to catch marijuana growers in hydro stores. It is not effective.
They would prefer to close all the shops claiming they provide materials to the marijuana growers. And when they can not do it, they will not wait for them at the gate.
They have proven a good method - informers.
They do not even have to recruit them. The authorities know what is happening in your environment, as long as you "lower", good chances to remain "high" ..
Not by the secrecy of what you buy.
By secret of what you're smoking, especially with whom !!
i actually started a thread on this after one of my cop friends informed me its routine to run plates of people coming out of hydro shops on slow days.