Shipped as five gallons of concentrated Foam Mix. Prior to use, you must combine the one part of the concentrated Foam mix with 4 parts very hot water and mix well using a mixing drill bit.  Let sit for at least 4 hours to cure. Yields 25 gallons of ready to use Foam Fluid, or 12 to 18 hours of Foam production in the FoamMaster OG Pro Foam Cannon.  Will also work in non-FoamMaster machines, but who would want to use one of those?  :)