Outdoor Ground Fog – You must use a Fog Chilling Device to create Low Lying Fog Effects! Froggy’s Freezin Fog is a water based fog machine fluid formulated to create optimum low lying fog effects for outdoor graveyard scenes. It is super thick on the front end and creates the perfect graveyard ground fog but here comes the good part; it is formulated to hang in the air to create the spooky graveyard scene as well. You get a 2 for 1 deal with the Freezin Fog that you miss out on if you use a Fast Dissipating Fluid outdoors. It is compatible with the American DJ Mister Kool Fog Machine. Freezin Fog, also known as, “Sta-Lo”, “Kool Fog” or “Chiller Fog” is perfectly formulated for all water based fog machines. This fog juice was designed to be the best Halloween Fog for Outdoor Graveyard Scenes! Freezin Fog can also be used with Ice Chest Chillers, Trash Can Chillers, Kool Kore Chillers etc.