“As I said in above review, once in a while, it cloggs and I have to inhale very hard on it, then get an enormous amount of vape (AK-47), but after that, it stays clear for a day or so, then it clogs again, so, lather, rinse, repeat (draw hard, waste a puff so I don't choke, then draw normally). Good product, works pretty well...no complaints.”