I don't know where you heard to use a dry bong, but i'm almost positive the most effective way of smoking salvia is out of any water piece, i'd recomend using ur bubbler w/ water in it. The few times i smoked saliva i used a dry peace and didnt get the full effects. A lot of people say that u need a butane lighter to smoke salvia, but ive used a regular bic and it works fine, but the most important thing is that you keep the flame on the saliva the entire time your smoking and take as big a hit as u can and hold it as long as u can.