RefEDGE PRO™ is the only spray on the market that allows the referee to vary the time it takes to disappear, or it’s dwell time, and accordingly adjust the line for conditions (weather and surface).  The temporary line on the field will last 1-5 minutes depending on application.  Want a line to last 1 minute, move the can fast when spraying…  Want the line to last 3-5 minutes, move the can slower when spraying to let the foam pile up more.  Most lines in most conditions are going to be usable for 90-150 seconds – more than enough time to complete the play.