A little…  All vanishing referee sprays are aerosols.  Aerosols, and the foaming action will be slightly diminished by colder and/or wetter weather.  RefEDGE PRO™ is the only spray in the world with our patent-pending Stand-and-Spray™ delivery method that allows the referee to control the spray, and by slowing down the speed when spraying the line, can create more foam to overcome adverse weather conditions.  With other sprays using a standard delivery method and standard formula/nozzle/valve, the foam you get is the foam you get, which is often not enough or too much and out of control, especially if windy or near the end of their can.