There's a huge variation in 'throw' between scents, I've found. I get mine from gelluminations, and must say that the blackberry, mulberry, smores, and cinnamon stick all will fill a good sized bar with one candle burning. Some scents just don't cast scent well at all, like their cherry for example. I rely on customer feedback since it's impossible for me to test this, living in a candle factory and all. I'm ordering a lot of 4 ounce bottles of scents I've never made before to make some small batches for my people to try, and strength of the scent will be a large factor to test.