So let me get this straight......people equate bho to a skid row Crack smoking junky? That's the funniest shit I heard all year. Butane is used in food production in products you eat every day moron. Please have an understanding of chemistry and properties before you make wild assumptions and statements. As Bob Saget once said: have you ever sucked dick for weed?? These people that talk shit about bho are the same kinda people that smoke cigs, drink alcohol and pop oxys because their doctor prescribed it to them. How's that for an assumption? The msds on butane is 5000 ppm's before it becomes harmful. I have crushed discs and bho works better than any oxy ever did. Does that mean I'm a junky? Fuck no! Means I'm smart enough to know that bho is a safer alternative than any Western medicine Dr can prescribe. Gov't knows it, most people with an iq over 10 know it(why do you think big pharma is taking over our industry???), and that's why it's demonized....that and every dip shit kid that blow up his neighbors, cuz he saw a youtube tek on how to blast in an enclosed space whilst smoking?! Please have some gumption in your "assessments" that you obviously have no real life experiences in (bho). I repeatedly test at under 25 ppm residual solvents EVERY time, so for the sake of math 5000 ÷ 50=100. That's a hundred dabs a day. Pretty safe bet. I'll rock those numbers anyday and feel safe.