This High-Density Fog Juice by Chauvet is specifically formulated for use in all water-based haze and fog machines. This fog juice produces a thicker and denser smoke than the original HJU, and it wont leave a stain or residue. Its also non-toxic, non-flammable and unscented. Chauvet fluids are designed and tested to provide exceptional output from Chauvet fog machines. The use of other, inferior products can cause irreparable damage to your machine. Play it safe and get maximum output by trusting Chauvet fluids.