No. That's wrong. PLEASE do not post info you're not sure about. People may be betting their freedom on what they read in here. They shouldn't, but they do.
Ice water hash is fine...dry sieve is fine. BHO is frowned on because of the Butane safety hazard. A couple kids blew up their parents garage last month here cooking BHO. A friend of mine was busted 2 weeks ago with 130 plants, 10 Lbs, and some BHO gear. They didn't charge for any of the weed or cultivation, but are hitting him hard for the BHO lab. His bail was $50,000 (me and Commercial J bailed him out), and the only deal they're offering is 3 years in prison.
Commercial J's op had a visit from a few detectives 6 weeks ago. He had 200 plants, 40k of lights, a few lbs of dry, a commercial washer settup for ice water hash, loads of patients, and NO BHO LAB. His paperwork was absolutely perfect. Like me, he sees our lawyer every month to update the book and polish up the records. He was cited for some code violations that will cost him a pretty penny. But, he's free to operate.
CO2 critical extraction is a legal way to make oil. The quality is not as good as with Butane, but it's safer. It will not suprise me if, as the laws ease on grow ops, they get tougher on BHO labs. Concentrates are becoming more and more popular. It's just a matter of time before a couple dumb kids blow up the lab and end up killing the neighbors 6 year old kid. After that (and it WILL happen) they will start treating BHO labs like meth labs...and handing out meth-like prison terms. And by lab, I mean a can of butane, a tube, and a filter. On the advice of our lawyer, we don't even associate with anyone making BHO. We also will not supply trim to anyone we know is making it. I don't want to be charged with conspiracy to blow up a 6 year old.
The best thing weed has going for it is the lack of victims. BUT, if we start blowing shit up, there will be victims...and THAT will give the anti-weed movement a butt-load of amunition to be used against us. If you make BHO please do so outside.