This handy party gizmo is equipped with the "Double Bubble Wheel" designed to produce a solid, plentiful amount of bubbles continuously. The B-100's mouth directs a high output of bubbles up into the air while simultaneously recycling liquid and eliminating dripping. Easy refills and the included hanging bracket makes the B-100 very user-friendly. Without doubt, the B-100 is sure to make any celebration a memorable one. Bubble fluid is sold separately at $10 per jug. Fluid is a water-based formula that is safe, non-toxic and 100% biodegradable. One jug of fluid will last about 1 hour of intermittent use. Please don't use any other liquid in the machine. Great for weddings!